A thrilling play, that has a wonderful twist in the beginning and ending. Neither one is obviously foreseeable. The play is worth four stars for the deception and the old fashioned murder mystery that is hard not to savor, especially as it is done so poorly in the genre today. However, the film attempts comedy and it mostly falls flat and the language used seems more apt for the 1940s than the 70s. The interplay could have been snappier and the whole concept of attempting to copy and be a historian of famous murderers seemed unnecessary, just have him want to take out his wife. In addition, the opening scene was very well done, but the sheer absurdity of the conclusion of the scene made it ridiculous and set a strange tone. Overall, there were a few funny moments and like the best suspense and thriller literature, it keeps you reading and guessing. Lastly, the mistake of drowning the mistress rather than the wife was done expertly and truly was a memorable moment.