One of those who/why/whatdunnit jobs where everyone could be a suspect and you don't feel sorry for the victim because they're such a dreadful person. The portrayal of ex public schoolboys seems very well observed, and I didn't see the ending coming. It's difficult to sympathise with much of the cast of characters, with a couple of exceptions - I would have been happy for the whole lot of them to have been bumped off in a freak earthquake, even the ones who were the most sympathetic. So while it lacks peril as a result, it's a very entertaining journey to the denouement.