Sam had basically flung himself into work, at least once the hangover had subsided. It helped to keep busy, without the buzz of alcohol to drown out the nightmares and the flashbacks there really wasn't any other option but to try and keep his mind occupied. He'd thought he was getting on top of it until he talked to Rosa and his guilt over what happened to her on his watch had amplified everything he was already feeling.
Honestly, it was taking all his self control not to just pick up the bottle again and drink until oblivion swallowed him. So books, he'd let books swallow him instead. Yes it was possibly antisocial, but it was escapism that allowed him to forget for at least a short while.
He looked up at the familiar voice, smirking slightly at Derek's comment. "We've been over this. I love books but I don't love books." He closed the book and looked up at his friend. "Is this you checking up on me?"