Somehow, Sherlock and John end up hiding from a serial killer in a closet.

Absolute silence is not exactly Sherlock's strong suit. Luckily, John and Sherlock have devised a code for this exact sort of situation: John knows Morse Code and Sherlock knows how to interpret knowing glares.

John gives Sherlock the kind of look that practically screams 'I bloody hate you for this' and Sherlock, naturally, smirks.

Sherlock blinks ' T'.

John is astounded that, even in blinks, Sherlock cannot shut the hell up.

John diverts his eyes, and Sherlock realizes that he must be uncomfortable. They're practically pressed together, and John's face is right is currently being smothered in Sherlock's scarf.

John feels warm. Too warm. He hasn't felt this warm since he last-

Oh shit.

John looks up at Sherlocks face and realizes just how close they art. Sherlock gets the weird impulse to kiss John and say he tripped, face-first, into the doctor's mouth.

Sherlock certainly doesn't help when he leans down and purrs into the doctor's ear "I have a wonderful idea..."

Thank god the serial killer opens the closet door at that exact moment. Sherlock tackles him while John puts the cuffs on him.

(What John doesn't know is that he wasn't the only one that was warm.)