In a departure from his usual roles, Steve Martin plays a lonely man who adopts a girl after she happens into his house. "A Simple Twist of Fate" is an almost mystifying movie, and a very good one. While there are certainly some funny parts, it's mainly about how the entry of this girl into his existence changes the course of his life, and also turns out to have a link to something else in his life. The movie has really good character development. Along with Martin, there's Gabriel Byrne as a slimy politician, Laura Linney as his unfulfilled wife, and Catherine O'Hara as a shopkeeper who helps Martin. This is a movie that I very much recommend to everyone.