It's been so long since I've seen a film with a decent plot and intriguing storyline, that this was an excellent find. I'm a big Christie fan anyway, but this somehow slipped under the radar and is vastly underrated imho. It has a great cast and atmosphere, the mystery keeps you guessing until the end and I can't fault the production qualities. I wish more film makers would use better source material and tell a coherent and believable story than relying on film trickery and crazy timeline jumps to try and engage an audience. This is a masterclass on how it should be done and deserves the attention of anyone who likes a whodunnit?