A/N Hey My Lovelies!!! Sorry this update took so long!!! Ideas keep coming for OneShots and distractions happen lol...anyways...Enjoy<3

"Holy shit." John whispered, pushing himself to his feet and stepping closer to the Siren, his jaw open in shock. He reached for his Med Scanner out of habit, the doctor within him wanting to heal the horrific wound.

It was clearly no more than two years old, though the laceration that ran through it was less than a year old.

"How in the Hell did you survive that? A burn that size should have killed you, or at the very least destroyed your muscles to the point of permanent incapacitation." He pointed his scanner at the wounds and read the data that popped up on the screen. "Signs of a healed infection in both the burn and the cut. Seriously, you shouldn't be alive right now." Sherlock laughed hollowly again, drawing John's attention back to his face. His jaw was tight and there were tears in his eyes. He looked as though he was in pain.

"Moriarty has incredibly skilled physicians within his web."

"Moriarty?"

"The Spider. I spent nearly a year as his personal pet before I escaped."

"Does it still hurt?" Sherlock hesitated before nodding.

"Only when I lift the energy from it. The muscles were severely damaged when I broke the seal, but I can manipulate the energies to trick the damaged tissue into not hurting anymore." John reached for his Med Kit, digging through until he found his sonic kit.

"I can heal the muscles in the cut, but I would have to re-open it-"

"No!" The harshness in Sherlock's tone shocked John, and he looked up, instantly reading the distress in the Siren's eyes. "If you heal the cut the seal will be intact. If the seal is intact, Moriarty can find me." The Siren sighed, wincing as he lowered himself to the deck. "If Moriarty finds me-" He ran his finger through his hair, tugging harshly.

"He'll kill you?" Sherlock shook his head, leaning back and resting against the edge of the boat, looking incredibly tired.

"No. He will string me up and take me apart, piece by piece, until all that is left is my song." John set his scanner and kit down and moved to sit next to Sherlock, fighting his instincts to heal the wounds. "That's why he wanted me; for my song. I have spent many years honing my song, learning how to manipulate energies to change things. The song of a Siren can be used for far more than just manipulating the impulses of creatures, though most people aren't aware of that fact. Moriarty knew, and he found out that I had been experimenting."

"He wanted to use your song to aid his trafficking ring."

"That's right. He made me hide his ships as they passed checkpoints and Rangers. He had me disguise his men so they wouldn't be recognized. He- he had me manipulate the people he wanted dead so they would kill themselves. He had me change the memories of the people his men would assault so no one could ID his men." John's head was spinning, it was a clever idea, but the damage that had been done to Sherlock's body was beyond horrific.

"How does the seal lead him to you? It's just a burn, right?"

"It's a psychic link, he's a Seer. The seal acts as a connection. As long as the seal is whole he can connect to it."

"Break the seal, break the link." Sherlock nodded, tracing the burn with one of his long, pale fingers. "What if I heal the burn? I don't have the equipment on me, but if we can get to a Med Bay I could use my clearance to gain access to it."

"It can't be healed. He had at least one of every type of Med Kit available. I tried healing it before I escaped, it just reappeared."

"He must have tainted the tissues somehow. That would explain the infections my Scanner picked up. It labels anything foreign in the tissues as an infection, especially if it can't identify what it is." John reached for one of the crates and pried it open, pulling out his tablet and typing in some data.

"What are you searching for?"

"According to this, if we can identify what the scanner has identified as an infection, we can use sonic technology to forcefully pull it from the tissues and heal the wounds." John grinned at the Siren, tossing his tablet aside and turning to face the creature. "We can repair the damage Sherlock, I can free you from the link." The Siren looked uncertain, chewing on his bottom lip and running a hand over his tail.

"Why?" John blinked, unable to comprehend why Sherlock was hesitating. "I deserve to suffer for the things I did John. I don't deserve to be healed." John shifted so he was kneeling and shuffled closer to the Siren, taking the creature's face in his hands and meeting his eyes.

"No one deserves this Sherlock. You didn't do anything wrong. He tortured you, forced you to do those things. You had no choice, and forcing yourself to suffer won't make the regret go away." Sherlock's eyes filled with confusion and he furrowed his brow.

"I never mentioned the torture." He whispered, his voice soft and timid. John smiled sadly and sat back on his heels, grabbing his Med Bag and pulling out the set of ID tags he kept there and handing them to the siren. Sherlock read the tags, looking back at John with understanding and pain in his eyes.

"You can recognize the symptoms of a torture victim when you're one yourself." John's voice was unsteady and he stared at his trembling hands, fighting the wave of memories that threatened to assault him. "I was out on patrol when I got grabbed by a pair of rebels. They tossed me in a P.O.W. camp and let their men play."

"How long?"

"Eighteen days. My company tracked me down and got me out. We were ambushed on the way out. They didn't walk away, I did. Took me months to recover then when I did, all I could see in my friend's eyes was pity and fear." John looked up and met Sherlock's eyes, blinking away the tears and taking a steadying breath.

"That's why you're out here."

"Yep. There was nothing left for me back there, so I left." Sherlock was quiet for a long while, staring at John with an intensity that left him squirming.

"This is a suicide mission." It was a simple statement, but it made John's chest tighten. He nodded, wiping his eyes and huffing a laugh.

"Haven't heard it said out loud before. Kind of makes it real." John pushed to his feet, untangling the mainsail line and quickly securing the items he had pulled out of his crates. He turned back to Sherlock, a mischievous grin on his lips. "I've got a buddy back on E2 that works in an industrial level chemistry lab. If anyone can figure out what is tainting your burns, Mikey Stamford can."

"Why are you helping me?"

"Because you saved me, and anything that will help fuck with the Spider's operations sounds like fun to me."

"It's going to be dangerous."

"I'm on a suicide mission, remember? I'm looking for danger." John winked, turning to face the far end of the ship and backing up a few steps.

He shot Sherlock a dangerous grin before leaping to the end of the ship, pulling the sail tight and making the boat do a hard turn. He heard Sherlock's yelp of shock and laughed, adrenaline coursing through his veins.

"Hang on to your tail Gorgeous."

The boat surged forwards, carrying John and Sherlock back towards the Siren's last hope.