Carroll Baker plays a dual role as translator Julie Harrison and her twin sister Mary. The serpentine plot begins as Julie tells her lawyer Dave Barton that Mary's life is being threatened in London while Julie herself is being stalked by a mysterious stranger in Amsterdam.
Carroll Baker
Julie Harrison / Mary Harrison
George Hilton
Tony Shane
Stephen Boyd
Dave Barton
Lucretia Love
Margaret
Luciano Pigozzi
Steve Hunter
Daniele Vargas
James Marlowe
Ivano Staccioli
Hank
Franco Ressel
Inspector Rinker
