No matter how many times she played it over in her head, she couldn't find a way out anymore than she could figure how he managed it in the first place. She wasn't particularly surprised, though. Moriarty was always five steps ahead of everyone, usually even Sherlock.
"People aren't supposed to be nocturnal, Holmes."
"You only say 'Holmes' when you're annoyed with me, Watson, and it isn't about my midnight experimenting."
"Oh, 'midnight,' he says – You make me lose sleep."
"Why should you lose sleep when I stay up?"
"You abuse your body. Maybe it's 'just transportation' but you've got to be better to it if you want it to keep working, you idiot."
"… You lose enough sleep as it is, my dear Watson. I'll cut down on my late nights."
"… Thank you."
So much for that gesture of goodwill. He tried, but it didn't last long. If only he hadn't been passed out so solidly on the couch after messing around until two-thirty in the morning – but she couldn't really blame him. Moriarty would have found a way to get to her anyway…