I read (and loved) Red House Mystery last autumn, and saw no slash at all. Apparently it was before I'd run out of G-rated Sharpe fanfic, which I was trying to stick with to preserve my innocence, and got sucked into the slash stories because they were the only thing left. And then kinda started to like them. And THEN discovered Horatio and Archie, whom it's basically impossible not to slash, although my inner Mary Sue would like them to at least be bi, as Sharpe and Harper so clearly are. But I haven't yet gotten to the point where I slash EVERYONE. Maybe I have a slash monocle.