A film of this genre is highly dependent on the third act. This film promised so much, with a very intriguing set-up and clever turning point. Then, the nonsense of the final 20 minutes brings the whole thing literally crashing down. I was more than satisfied with the performances and enjoyed the lavish setting ; it just simply collapsed with a very unsatisfying conclusion. As I've said the conclusion in the 'Whodunnit' genre is fairly crucial. So much detail appeared to be well set-up to provide a satisfying climax, that the actual ending actually annoyed me. To be honest I'm fairly baffled by some of the positive reviews. 'Knives Out' was excellent. This isn't.