One on Top of the Other (1969) is a Mystery, Thriller film that follows a San Francisco doctor encounters a prostitute who bears a striking resemblance to his late wife. Currently, you can watch One on Top of the Other on BFI Player Amazon Channel. Streaming availability may vary by country and platform over time. It has a user rating of 6.4 out of 10 from 93 votes. Fans of mystery movies may also want to explore similar titles below.