An unemployed engineer accepts a $25,000 bribe to marry a beautiful and mysterious woman so that she can stay in the United States. During their honeymoon, he starts to fall in love with her, but she suddenly disappears. When he tries to find her, it puts his life in danger.

A man witnesses a murder in a secluded mansion. When he reports it, there's no evidence of the murder, or that anyone was there. Two years later he wakes up in a hospital room after a polo accident to find he's had amnesia, is now married, and living in Switzerland. Now remembering the incident he returns to England to try to solve the mystery.