In London, Julia Ross is totally broke and unsuccessfully seeking a job. Her previous love affair with the lawyer Dennis Bruce has ended and he has just gotten engaged to another woman on the previous night. When she sees an advertisement in a newspaper in the boarding house where she lives, she goes to the employment agency and she is interviewed by Mrs. Sparkes. When she learns that Julia is alone in London with neither relatives nor boyfriend, she offers her a position of private secretary with the wealthy Mrs. Hughes and her son Ralph Hughes. Julia is immediately hired and Mrs. Hughes tells that she must move to her house that night. Julia goes to the boarding house of Mrs. Mackie to pack her things and she learns that Dennis has called off his wedding. They schedule a date for the next Friday and she goes to the house. Julia wakes up two days later at a seaside manor in Cornwall and is told that she is Marion Hughes, the wife of Ralph, who is unstable due to a nervous breakdown and delusional. Soon she learns that Ralph has killed Marion and now she is his alibi. Further he is plotting a scheme to kill her as if she had committed suicide. What can Julia do to save her life?—Claudio Carvalho, Rio de Janeiro, Brazil