Behind You

Unknown: Hi. It's me, Tom.
Me: Hi, Tom... you come as unknown.
Unknown: 😬 yes, I left my phone at your house last night.
Me: Really? 😂 I didn't notice. My bad.
Unknown: No worries. I'm on my way to get it.
Me: Where did you leave it?
Unknown: On the dining table.
Me: 👍 found it.
Walking towards the table and then back to the living room, Tom's cellphone in hand.
Unknown: Thanks.
Me: Got it. Where are you now?
Tom: Behind you.

80 words on the dot.
Second take on the Halloween's Vault.