The Sister in Law
“She Helped Her Husband Destroy His Brother By The Most Immoral Act Imaginable”
Synopsis
Robert and Edward are brothers involved in a web of adultery and deceit. They share Edward's wife and his mistress and a mission to deliver a package of jewels across the Canadian border, but the mission turns out to be deadly.
Top Cast
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John Savage
Robert Strong
Will MacMillan
Edward Strong
Anne Saxon
Joanna Strong
Meridith Baer
Deborah Holt
Frank Adonis
Benjo
Jonathan Oppenheim
Fat Man
Tom Mahoney
Thin Man
Jan DeCarlo
Mrs. Strong
Jack Cooper
Mr. Strong
Larry Sontag
Hood
Gillian Gordon
Lena
Michael Ruben
John Strong
Ray Valente
Messenger
Robert Baines
Literary Agent
Bruce G. Sparks
Producer #1
Carter Stevens
Producer #2
Noel Casabona
Hood
Lucien Bohbot
Girl in Cafe
Release History & Theatrical Window
April 25, 1975
Wide Cinema Exhibition
Key Information & Fast Facts
- Director
- Joseph Ruben
- Screenplay & Story
- Joseph Ruben
- Original Score
- John Savage
- Original Title
- The Sister in Law
- Country of Origin
- United States of America
- Spoken Languages
- English
- Runtime
- 1h 25m
- Production Studios
- Loose Reel Productions, M.S.W. Productions, Crown International Productions
Creative Leadership & Key Crew
Joseph Ruben
Joseph Ruben
John Savage
Bruce G. Sparks
George Bowers
Jonathan Noah Krivine, Joseph Ruben
Department Leadership Roster
Joseph Ruben
Director
John Savage
Original Music Composer
Bruce G. Sparks
Director of Photography
George Bowers
Editor
Jonathan Noah Krivine
Producer
Joseph Ruben
Writer
Joseph Ruben
Producer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
R: Restricted — Under 17 requires accompanying parent or adult guardian.
International Certification Matrix
Restricted — Under 17 requires accompanying parent or adult guardian.
Production Stills & Gallery
Official cinematic photography and background stills for The Sister in Law.
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Frequently Asked Questions About The Sister in Law
Quick factual answers about cast, synopsis, director, box office, and release information.
What is The Sister in Law about?
Robert and Edward are brothers involved in a web of adultery and deceit. They share Edward's wife and his mistress and a mission to deliver a package of jewels across the Canadian border, but the mission turns out to be deadly.
Who directed The Sister in Law?
The Sister in Law was directed by Joseph Ruben.
Who stars in The Sister in Law?
The principal cast of The Sister in Law includes John Savage, Will MacMillan, Anne Saxon, Meridith Baer, Frank Adonis.
When was The Sister in Law released and how long is it?
The Sister in Law was released in 1975 with a total runtime of 1h 25m.
Who composed the musical score for The Sister in Law?
The original motion picture soundtrack for The Sister in Law was composed by John Savage.
What is the age rating and content advisory for The Sister in Law?
The Sister in Law holds official age classifications: US: R (Restricted — Under 17 requires accompanying parent or adult guardian.).