In the Woods - Tana French

“Cheers, lads. Thanks for inviting me over. Here’s to a quick solve and no nasty surprises.”

 

Oh, Sam. I'd say that wish is already down the drain, and you are the only one that doesn't know it.

 

A few pages later, Cassie is doing a bit of profiling. Given all the chat about the rock beating vs the bag, trowel (those kids were talking about a missing one) and the posing, and the theory of a schizophrenic having a break-down, I think the twin was the rock, and protective big sister did the rest as clean-up. Or mama and papa.

(show spoiler)