I hate that I can't put a subject line in comments. Anyway. Rec!

Not to be an enabler but this is one of my top two favorite Mike/Harvey (http://www.tasteofpoison.inkubation.net/viewstory.php?sid=504) but it's not on AO3 so I thought I'd share in case you hadn't run across it before and it's something that appeals. Arsenic does h/c really really well.