Decorating their office, Edwin instructing the exact angle that the fairy lights should be in to Crystal and Niko, Charles smiling because his wife is a bitch and he loves that. Christmas crackers are pulled, releasing confetti, which Edwin is appalled by at first. But the atmosphere of gentle snow falling on London lamp lights outside, and the twinkling of fairy lights and laughter as Crystal tries (and fails) to describe the texture of minced pies to Charles just make Edwin feel... At home. Not at home with his parents, whose Christmas atmosphere was dull and full of stiffly dressed relatives arranged in uniform lines, but content. He sighed, and letting himself be happy in the moment, took out his cracker crown and placed it on Charles' head.
no because I usually don't really like Christmas specials (or any holiday specials really) in shows but the thought of a dead boy detectives Christmas episode is soooo aaaa. like Edwin and Charles having spent 30 Christmas together, maybe setting up a tree in their office or going outside to see if they can still make snow angels even if they can't feel the cold on their skin. idk its just so sweet to me and really speaks to how long they've known each other and how they are (with Crystal and Niko this time around) a little family. plus cool Christmas ghosts or snowflake sprites or anything!