A dramatization of Britain's notorious Crippen murder case. American-born Hawley Harvey Crippen (nicknamed "Peter"), a mild-mannered, middle-aged doctor who made his living in London selling quack remedies, was convicted and hanged in 1910 for poisoning his wife, Belle, dismembering her body and burying the remains in the coal cellar of their home before fleeing England with his mistress, Ethel Le Neve, only to be arrested aboard ship while en route to North America. The movie opens with the start of Crippen's trial in the Old Bailey; flashbacks provide a look at the misery of Crippen's marriage to the overbearing Belle, a failed music-hall performer with an eye for younger men, and how Crippen found true love in the person of his young secretary, until events reached their dreadful climax. That Crippen caused his wife's death, there is little doubt, but this movie wonders: Was it a deliberate act?