Sherlock had no idea how long he walked. He walked until the sun went down, and then walked some more. By the time he got back, its was late. He could hear the bed creaking upstairs as John tossed and turned in the upstairs bedroom.

Okay, it was going to be like that then.

He ran a hand over his face and retreated to their...er.. his bedroom. He read for a while and messed around on his laptop. The sun was almost starting to peak over the London horizon by the time he finally fell asleep from exhaustion, the still open laptop tipped over beside him.