Addison loses a dare and has to explore an old haunted house in the buff. But she's not doing it alone. The boy she grew up with goes with her to keep her safe and make sure she keeps to the bet.
But when they stumble onto a surprise, things get hot.
I think the thing we need to take away from this book is that so-called haunted houses shouldn't be explored in the nude. Or possibly they should be if the person you're doing the exploring with is a stepbro who you REALLY want to get it on with.
(Torn on the stepsibling thing because technically they're not related. It just feels sordid. And, hey, if you're going to get naked in a haunted house, it might as well be with someone you're going to see across the table at holidays, RIGHT?!?! Because that's not awkward at all.)