In this British thriller, former drug addict Tim Brett has cleaned up his act and written a best-seller about his experiences. He reconnects with a wealthy Aunt, but she is soon found murdered. He becomes romantically involved with Juliet Bristow, the woman who discovered her body. The two become engaged to wed, but Tim remains dissatisfied with the police's progress in finding his Aunt's killer. When he starts investigating himself, he receives a series of ominous threats to stop prying. Tim's insistence in staying involved in the case may threaten his upcoming marriage as well as his life.