There's always another twist to...

A mute young woman is stalked by a serial killer at her uncle's mansion.

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Main Cast: Jacqueline Bisset, Christopher Plummer, John Phillip Law, Sam Wanamaker, Mildred Dunnock, Gayle Hunnicutt, Elaine Stritch, John Ronane, Sheila Brennan, Ronald Radd

Director: Peter Collinson

Writers: Chris Bryant, Allan Scott

Editor: Raymond Poulton

Cinematographer: Ken Hodges

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