Losing his memories of the last few days, neurologist Dr. Steele is told that his wife has been brutally murdered. Steele, aware of his conniving wife's infidelity, believes he may have been the killer and enlists the aid of his pretty nurse Stella to hypnotize him into recovering his lost memories.

Lon Chaney Jr.
as Dr. Mark Steel (as Lon Chaney)

Patricia Morison
as Stella Madden

J. Carrol Naish
as Inspector Gregg

David Bruce
as Robert 'Bob' Duval

Ramsay Ames
as Maria Steele

Fay Helm
as Mrs. Duval

Holmes Herbert
as Bryant, the Butler

Alec Craig
as Bill, the Watchman

Frederick Giermann
as Marion's Father (as Fred Gierman)

Lisa Golm
as Marion's Mother