Yikes. This one's a long one. Mostly because over half of it is basically getting Barry and the Legends up to speed on what's happened between everyone's favorite mayor and alien. I hope Sara is in character, she's the one I'm worried about.

It's the end of Part 1, guys! Enjoy!

***

Iris, Felicity, and Winn were waiting anxiously in the cortex when Barry hurried in. "Iris," he ran to her, and Iris gasped in relief, running to hug him. "I'm so sorry!"

"I know, babe," Iris squeezed him tight. "And I'm fine. The most important thing is that we're both OK." She grinned and gestured to her dress. "And look. Who knew that Monique Lhuiller could survive a gunfight, right?"

Barry chuckled, then cupped her face. "I am going to marry you."

"I know," Iris smiled, kissing him. She frowned, feeling how tense he was. "What's wrong?"

"Something's wrong besides Nazis?" Winn frowned.

Barry scowled. "Black Siren's back."

"She is?" Iris's eyes widened.

"I can't believe I'm about to say this, but oh, thank God," Felicity sighed in relief.

"Hold on, what?" Barry frowned at her.

"Oh, right," Felicity winced. "Some people still don't know that small detail."

"Actually," Lena walked in, tugging her hair out of its bun, "all three of them made an appearance. Laurel even saved Alex from getting skewered by that Prometheus guy."

"I hate that man so much," Felicity scowled. "Please tell me she made his ears bleed."

"Bit hard to tell, considering he's keeping his mask on."

"Will someone please explain why you're referring to evil Laurel as a friend and not a killer," Barry scowled, looking around.

"We will," Iris put a hand on his shoulder. "We just need to wait for the rest of them to show up."

***

"There must be some way to wake him up," Stein looked down at Cisco, who was lying down on the medical bed. "I honestly think the world has gone mad. I never expected to see Malcolm Merlyn again, let alone killing Nazis instead of trying to kill us."

"Yeah, the same with Slade Wilson and Black Siren," Caitlin nodded, looking at her computer screen. "Well, he's got a concussion. It's not too bad, though. He'll be out for a little while."

Stein nodded, then looked at the blue leather jacket Caitlin was wearing. "May I ask why you're dressed like that?"

"Oh," Caitlin looked down at her suit. "I become Killer Frost whenever I'm angry or scared, and something tells me I'm gonna be both of those before this is all over."

Stein smiled slightly. "Astonishing."

***

"So what's the game plan?" Wally asked as he walked into the cortex, followed by Joe, Harry, James, and Thea.

"There is none yet," Barry shook his head. "Whoever attacked us knows who we are, so I think just get Joe and Cecille as far away as possible."

"Oh, no way, man," Wally shook his head. "I have to help out. Come on!"

"You're helping by keeping our family safe," Barry told him.

"He's right," Joe told Wally. "Until we know what these people want, nobody's safe."

"I still don't think anyone's safe here until we find out what Malcolm Merlyn, Slade Wilson, and Black Siren want," Barry grumbled.

"Oh, did they get up off their asses and decide to show up?" Harry raised an eyebrow.

"Man, Laurel was in plain view right outside the church," Winn pointed at him.

"Plain view. Uh huh. Was she wearing that suit of hers or not?"

"Sunglasses," James corrected. "But really, she was kind of obvious."

"Malcolm and Slade, not so much," Winn tilted his head side to side.

"You're . . . God," Barry ran a hand over his face. "First Oliver and Kara are together, now these three. Can I please understand what's going on?"

Lena's phone beeped, and she flicked up to see her messages. "That's Alex," she said. "She, Laurel, Sara, and Jax just brought Prometheus in. Oliver, Kara, Slade, and Malcolm aren't far behind them."

***

Caitlin and Stein quickly stood to the side as Laurel and Sara marched Prometheus in, Sara with a gun dug into Prometheus's back, Jax and Alex with guns of their own. Jax reached out to open the pipeline, and Laurel smirked as she shoved Prometheus in. "You're gonna love it in there," she smirked.

Prometheus just stared her down as the cell closed, and Sara finally lowered her gun. "Barry didn't look happy to see you," she said.

"That's probably because the last time I saw him, we were on opposite sides," Laurel answered with a sigh. "I was one of Zoom's top lieutenants."

"And you used to be in the pipeline," Caitlin added, narrowing her eyes.

"And now I'm not," Laurel smirked. "You guys really need better security."

"Shouldn't you try not to give them a reason to shoot you?" Alex raised an eyebrow at her as they walked to the cortex.

Laurel just sniffed. "Out of the three of us who showed up? I don't think I'm the main concern."

***

Barry narrowed his eyes at Laurel as the group walked into the cortex. "The only reason you're not in the pipeline right now is because you just helped take down whoever that guy was."

"First off, his name is Prometheus," Laurel narrowed her eyes. "Second of all, that's not true. You just don't want to deal with an even more pissed off Oliver Queen."

"She's right," Oliver walked in next, his arm around Kara's shoulders, and tension in the room went up as Slade and Malcolm walked in behind them. "And before anyone starts throwing lightning or knives or superpowers, you guys listen."

"If it's not good, I'm jamming a knife in your other eye," Sara glared at Slade.

"You can try," Kara mumbled as she rubbed her forehead.

"Excuse me?"

"You heard me, Sara," Kara looked at her.

"Do you even know who these guys are?!"

"Malcolm Merlyn, the one behind the Undertaking, sabotaged the Queen's Gambit, drugged Thea to kill you, former Ra's al Ghul," Kara rattled off, making Sara blink. "Slade Wilson, former Lian Yu castaway, injected with the mirakuru serum, went on a madman's vendetta in Starling City Oliver's second year back, injected with a cure at the end of it. Laurel Lance of Earth-2, lieutenant of the speedster known as Zoom, incarcerated in S.T.A.R. Labs until Prometheus broke her out. Sorry, did I miss anything?"

Barry blinked. "Uh, I think that covers it?"

"Not quite," Oliver shook his head. "That's the history that most of you know. You know their villain sides. Several of you in this room know a different side of them that the others don't, mainly because you weren't around seven, or four, months ago."

"Seven months," Barry frowned, thinking back. "That was about when I was imprisoned in the Speed Force."

"We just broke time," Sara recalled.

"Hang on, what?" Winn blinked. "How do you break time?"

"Winn," Oliver closed his eyes.

"Sorry, man," Winn ducked his head. "Shutting up."

"Thank you," Oliver nodded. "Last year, my team was facing a vigilante who called himself Prometheus. We later discovered he was the Star City District Attorney, Adrian Chase. He was the son of one of my victims from my year as the Hood, and because of what I did, he promised to make me suffer, and he had the team to do it. Black Siren was one of them at the time, and the others were Evelyn Sharpe, a betrayer of the team, and Talia al Ghul, the eldest daughter of Ra's al Ghul. Seven months ago, he started taking members of the team. Rene, Dinah, Curtis, Thea, Quentin, John, Felicity. By that point, Malcolm had offered his assistance, to get Thea back. Not even hours later, I found out Chase had also taken my son, William. By that point, I was desperate enough to reach out to anyone for help. Nyssa came when I called, and I planned on releasing Slade when I reached the island. But before we left Star City, I tried calling for you, Barry, Sara. Cisco came and told me about the Speed Force, that you and the Legends were unreachable. I wasn't going to ask Cisco or Wally to abandon Central City, so there was only one other person I could think of." He gestured to his girlfriend, who was leaning against the console. "I asked Cisco to breach me to Earth-38. Kara agreed to come."

He took a deep breath, closing his eyes as he remembered the island. "If she hadn't come, I don't know who would have walked away from Lian Yu," he told them. "Thea stepped on a landmine, and Malcolm took her place before Kara flew him off. Laurel turned and told Kara where William was located, and she got to him long before Chase did. But the problem wasn't the small army he had. It was that Chase had mined the entire island, and killing him would detonate them all. He wanted me to kill him, and kill everyone I loved in return. If Kara hadn't been there and hadn't been fast enough to knock the gun out of his hand, the island would have blown up with everyone still on it."

Sara looked like she wanted to say something, but Alex leaned in closer to her. "When one of them starts talking about this, it's best to let them get it all out at once," she whispered. "Neither of them like what comes next."

Sara clenched her jaw but let out a short nod. "Cisco made us devices to keep in contact between our universes," Oliver went on, and at this point, he had started a restless pace. "We did, every week, just to make sure there wasn't anything in each other's city that we needed help with. We kept that pattern up for three months." He stopped his pacing, taking a deep breath. "And Kara fell out of contact. At first, I thought she just missed a week, but the second week went past without hearing a word. When the third week went by and there was still nothing from her, I called Cisco and asked him to vibe her."

"Cisco said he never slept well until you told him you had her," Iris revealed, Barry swallowing hard.

"I was held by an organization called Project Cadmus," Kara finally spoke up, but there was a shake in her voice.

"Kara, if you need me to," Oliver began.

"No, Oliver," she shook her head. "This is my part of the story." She took a deep breath, and Oliver nodded, stepping aside slightly as Kara brushed her hair behind her ear. "My cousin and I have a . . . history with the Luthor family. Lena's safe, so don't give her that look," Kara immediately held up her hands as everyone simultaneously turned to Lena. "My cousin was responsible for putting her half-brother, Lex, in jail for several life sentences. Lillian Luthor separated Cadmus from the government, and it became an anti-alien terrorist organization, focused on taking out all aliens in National City. Every time they've tried a major attack, I've stopped them. I thought the next time they attacked, it would be something on a massive scale again." She closed her eyes. "It wasn't. They were attacking one of a new weapons facility in National City, but didn't advertise it as Cadmus. Thinking they were just robbers, I went in alone. I didn't know they were Cadmus until one of them stuck a needle in my neck."

Kara heard Felicity's breath hitch, and Thea looked at her sharply. "You never told us how they caught you."

"It wasn't important," Kara shook her head, looking down at her hands. "I spent three weeks there. Three weeks in hell, three weeks of dealing with the devil. Lian Yu might have been Oliver's purgatory, but Cadmus was mine." Her voice started to crack as she went on. "They started off by asking questions, ones about the D.E.O., some about aliens living in National City. Eventually, they stopped altogether. But the pain . . . the pain never stopped." She closed her eyes, swallowing hard. "Kryptonite cuffs rubbed my wrists raw, Kryptonite tools used to cut my skin, Kryptonite injections to make me burn from the inside out . . . it became a game to see how much I could bleed in one go."

Iris swallowed hard. "We never knew that, either."

"Until now, only Oliver and Alex did," Kara whispered. "I thought they would just let me die there. I hoped they would, since no one was coming." A small smile formed on her face. "At least, I thought no one was coming."

"After what you did to save me and my friends and family, there was no way I wasn't going to," Oliver shook his head. "Slade was with me when Cisco shared what happened, he volunteered to come right away. I called Malcolm and Laurel, and they arrived not long after. We jumped to Earth-38 and met Lena, who helped us find where Kara was being kept. We got her out, killed what Cadmus men we found, and blew up the Kryptonite we saw." He snorted. "Since Cadmus lost their subject, they decided the next best option would be to kill her."

Malcolm snorted. "I don't know why they thought that was smart."

"Because they aren't," Slade rolled his eye.

"Yeah, the first attempt they made on Kara was when she was with Malcolm," Oliver smirked. "That didn't end well for them. After that, I called Cisco, and he brought the rest of the team over. The next attempt?" His voice hardened. "In the middle of her workplace, in front of Cat Grant, Samantha, and William. Stabbed in the chest with a Kryptonite knife that would have killed her had Cisco not vibed her and sent Wally through to take her back to the D.E.O."

"Oh, God," Caitlin's eyes widened in horror, Stein swallowing hard.

"That was when we joined them on Earth-38," Iris said quietly. "Cisco and I stayed there, and after Harry helped Alex with Kara, he and Wally came back. That's how we know."

"Hang on, four months," Barry frowned, thinking back. "I thought I remembered seeing something that William ended up with you four months ago."

"Because Cadmus sniped Samantha dead in front of her own son four months ago," Oliver said bitterly, making Kara swallow and look down.

"You're kidding," Sara stared at him.

"Do I look like I'm kidding?" Oliver snapped, making her swallow. "No, I'm not. And right before we made our move on Cadmus, Kara was poisoned by another kind of Kryptonite that made her hallucinate. She saw me as Prometheus, and when her cousin arrived, she thought he was the alien queen she had faced just before I came to ask for her help. Mon-El's mother, Rhea."

"What a nightmare," Stein mumbled.

"We raided Cadmus right after," Alex continued. "Wally came back to help with that. He, Cisco, Malcolm, and Laurel took out Luthor's right-hand man while J'onn and I kept an eye out for Cadmus members. Those two," she pointed at Oliver and Slade, "killed Luthor after she hit Kara and Clark with Kryptonite lights."

"Who did kill her?" Oliver looked at Slade, frowning. "We both hit her at about the same time."

"Which would have killed her first, heart shot or head shot?" Slade wondered.

"Well, she's dead, that's all that matters," Oliver said bluntly, turning back around. "But again, Kara nearly died." He took a deep breath. "She flatlined three different times before she woke back up."

"Holy – " Barry didn't finish his line, he just pinched the bridge of his nose, starting to pace as well.

"Yeah," Oliver snorted. "Needless to say, not the best way the two of us could have gotten together, but I wouldn't have changed it."

"Me, neither," Kara smiled.

"And rumor has it Lena wins the betting pool about how Barry finds out?" Oliver raised an eyebrow.

"She did?" Winn blinked.

"Life-threatening situation," Lena smirked prettily. "You can pay me later."

"OK, so that's out of the way," Sara shook her head. "I'm still trying to understand how Malcolm Merlyn and Slade Wilson are in the same room and not going on a killing spree."

"It took time for the cure to work, but the mirakuru was gone not long before Oliver returned to the island," Slade answered. "I remember everything I did . . . I wish I didn't."

"Chase threatened my life if I didn't cooperate with him at first," Laurel shrugged. "Then he freed me from prison after Oliver put me there. I was done playing by his rules at the end. I didn't know he would take William. That was a low blow, especially for him."

"As for me," Malcolm sighed. "Well, I can't say much in my defense."

"No, you can't," Sara agreed with a withering glare.

"Then you don't need to trust me," Malcolm said bluntly. "The only people in this room that I need to for me to be happy are Oliver, Thea, and Kara."

"And by extension, the four of us," Alex nodded to the three other Earth-38ers on the other side of the room.

"I need more than that," Sara folded her arms. "This is the first I'm hearing of my sister having a doppelgänger – "

"Sorry," Barry winced.

"But Malcolm, you sank the Gambit and killed me. Slade, you did a complete 180."

"Kasnia," Kara said simply.

Sara blinked, taken aback. "What?"

"I gave Slade an offer when I freed him from Lian Yu," Oliver explained. "He helped me find my son, I'd help him find his. A few weeks ago, we finally did. Slade called me and Kara to ask for our help, and Malcolm volunteered to come along. We were told Joe was captured by a mercenary group called the Jackals – except it turned out he was leading the entire operation."

"After the Amazo, I was found by ASIS," Slade explained. "The mirakuru was quiet for a time, but then it came back. Joe knew my beef with Oliver, saw the monster I became because of the serum. That's who he thought I was."

"Slade and I joined the Jackals to see what Joe was up to," Malcolm went on. "Then Oliver decided to get himself captured."

"Well, better me than Kara," Oliver snorted.

Malcolm paused. "True. I don't think I would have kept my cover nearly that well then."

"Neither of us would have," Slade snorted.

"And there they go again," Laurel stage whispered.

"Shut it, Lance!" Malcolm growled.

Laurel rolled her eyes in response. "Joe gave Slade and Malcolm every opportunity to kill me," Oliver told Sara. "He literally tied me to a chair and offered me to Slade. They didn't even try to. Slade turned on his own son to save me. If he was the man he was when he had the mirakuru, would he have done that? If Malcolm hadn't come around, would he have done that?"

Sara didn't say anything for a long time. "Sara," Kara whispered. "I know this is hard – "

"It is," Sara nodded shortly, cutting her off, before turning to glare at the two of them. "I don't trust you. I probably won't unless I see you do something to prove otherwise, so I'm going to be watching you. And the second either of you two slip up, I'm taking your other eye and making sure you stay dead."

Both men nodded in understanding, and Kara finally relaxed. "Thank you," she said quietly.

Sara sighed. "You're lucky Malcolm deflected the shot."

"Barry?" Oliver prompted.

He finished pacing before turning to look at Laurel. "I only faced you once, so I'm not really in a good position to judge," he told her. "And you two were never really my villains. I've only got reputations to go off of, and they're not good."

"Understatement," Jax grumbled.

"But," Barry continued, folding his arms. "I trust Oliver and Kara. If they're certain you three can be trusted, then I'm going to go out on a limb and say I do, too. Just don't expect me to warm up to you three right away."

"I don't think any of us expect you to," Malcolm looked around, and Slade and Laurel shook their heads in agreement.

"Hey," Barry walked up to Kara, holding out his arms. "I'm sorry that happened to you." Kara smiled and hugged him, Barry squeezing her tight. "I would have helped if I could have."

"I know," Kara whispered.

"And I don't know who to threaten if one of you hurts the other," Barry looked between her and Oliver. "So really, all I can say there is congratulations."

"Thanks," Oliver chuckled.

"Did anyone who wasn't involved in Cadmus know?" Barry looked around.

"The only reason I knew was because I overheard the bets being made," Stein said dryly.

"So does that mean Thea's bet doesn't count?" Harry asked.

"Hey!" Thea scowled.

"Not that it isn't fun hearing how much money my sister earned betting on my girlfriend and I," Oliver gave the two of them a look. "But we have more pressing concerns."

"Like this son of a bitch," Laurel narrowed her eyes at the screen showing Prometheus in the pipeline.

"And the rest of the Nazis," Oliver nodded, turning to look at Mick. "Did you wipe the minds of the guests at the wedding?"

"Yep," he nodded. "Everyone's secret identity remains secret."

"And we checked the entire city," Kara added. "There's no trace of them."

"Well, clearly they attacked because you all were there," Iris looked around.

"Killers, heroes, then what?" Barry frowned.

"If I know my history, ethnic cleansing, world domination," Felicity shuddered.

"Make America Aryan again," Jax said sarcastically.

"Which it never was," Caitlin snorted.

"Hashtag 'melting pot,'" Iris grumbled.

"I hate Nazis," Mick growled.

"Preach to the choir," James snorted.

"Their appearance seems quite a severe course of action in support of a cause that was defeated over seventy years ago," Stein remarked.

"Apparently, they didn't know about the Yalta Conference," Barry quipped.

"What's a Yalta?" Mick frowned.

Everyone blinked at him, then Kara frowned. "That woman didn't seem surprised to see me," she said.

"How?" Lena asked. "We're from a different Earth entirely."

"Unless she follows the news and stalks the girlfriend of Star City's mayor, how did she know you were here?" Alex asked.

"And how was she as strong as you?" Winn added.

"That archer matched me, shot for shot," Oliver admitted. "Not only that, he took on me and Slade at the same time, effortlessly."

"There's not many people who can do that," Sara frowned.

"Barely any," Slade agreed. "He was impressive."

Oliver turned to the screen with Prometheus on it, narrowing his eyes. "You know, I think it's time we got some answers."

"Yeah, he ain't exactly talking," Jax shook his head.

Oliver smirked. "So let's make him talk." He turned around. "Kara can be very persuasive against this guy when she needs to be."

Kara grinned smugly. "I enjoyed that so much."

"What did she do?" Caitlin frowned.

"Oh, it was awesome," Thea grinned giddily. "She kicked his ass so much, it was beautiful to watch."

"And if Prometheus doesn't want to talk, well," Oliver shrugged, gesturing for Kara to go in front of him. "Am I correct when I say you wouldn't mind doing it again?"

"Yep," Kara smirked, walking down the hall.

"I'm watching that," Sara walked after her.

"Me, too," Barry followed after them.

"That's assuming this really is Chase," Malcolm murmured as the three former villains followed.

"What makes you say that?" Slade frowned.

"Main question," Malcolm answered. "What are Nazis still doing around in 2017?"

***

The archer walked up to the woman in black, coming up alongside her as she watched. "The Kryptonian was stronger than we anticipated," he said.

"Next time, she won't be so lucky," the woman in black said darkly.

A zipping sound made them turn, and in a flash of red, a vibrating figure in yellow stopped behind them. "What did you do?" their ally hissed, and he stopped vibrating and yanked off his cowl, revealing the face of Harrison Wells. "What did you do?! You were supposed to wait until we were ready before you attacked!"

The archer reached up and pressed a button on the side of his mask, and it faded away, and the face of Oliver Queen looked back at Wells. "Opportunity knocked in the form of a wedding," he answered. "We answered."

"Opportunity knocked," Wells mocked. "And you answered. Well, now, because of your recklessness, we have lost Prometheus!"

Oliver narrowed his eyes, but before either of them could move forward, the woman in black stepped between them. "Boys, boys, boys, don't fight! You need to save your power, your anger, for those heroes." Both turned to her as she pressed a button on the side of her mask, and her mask faded away, and the beautiful but cold features of Kara Zor-El were revealed. "We will have another chance to achieve victory," she told them confidently. "And when we do . . . " Her blood red lips curled in a smirk. "We will kill every last one of them."

***

So ends Part 1 of Crisis, and on to Part 2 we go!

Part of what I plan on expanding on is how the villains either do or don't get along with other heroes. Sara and Black Siren will have their interactions, and there will probably be more with Sara and Slade, but the Legends have also dealt with Malcolm.

That reminds me - did they wipe Malcolm's mind before returning him after the whole Legion of Doom thing? I can't for the life of me remember. I don't think it was ever clarified.

Anyway . . . Earth-X Prometheus reveal next time!