After a car accident in England, an American develops amnesia and tries to find his true identity, using various clues, but ends up in the midst of a mysterious murder
A group of crooks accidentally kill an elderly shop assistant while stealing the keys to the jewelry shop where she works
An up and coming politician is caught in a compromising photograph taken by a maid, who turns out to be part of a sophisticated blackmail ring When the girl is found murdered, he holds an incriminating old dueling
A circus becomes the location for stolen loot and murder