I read it last year, I mean summer last year not a few weeks ago! I also caught the film version on True Movies (and Plain Truth another of her books) both had their endings changed, The Pact was really altered.
I wasn't sure of it, Chris getting off, would a jury really do that? I thought the handling of Emily's depression and how she felt trapped good but a little rushed. Gus was just annoying as a character though.