The Sister in Law
"She Helped Her Husband Destroy His Brother By The Most Immoral Act Imaginable"
2.9TMDB
...
1975
1h 25m
Drama
Overview
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.
