Adele

Boring. Not at all suspenseful. The characters aren't unique or deep enough to compensate for he barebones plot. Obvious after 15% that the dead body is Ambrose and that the girls buried, but didn't murder, him. But the reader is strung along until 50% before that's stated clearly. About a third of the way through, it's clear that either Kate or Luc killed Ambrose, and the other main characters look stupid not to consider the possibility. The characters aren't well drawn enough for the reader to care about the killer's motives.