This truly enjoyable film portrays the frustrations of a mild mannered clerk embroiled in a mystery that has occurred outside of his memory. Most entertaining is Ralph Richardson, perfectly cast a the staid, banker living a life of ritualistic routine that has been turned upside down. He has that natural gift of absolute clear speech - even in the most dramatic moments and is a pleasure to watch. His reparte with the investigating inspector is most engaging. To bad this movie is unavailable on video.