Overview
The Good Sister follows a couple who is working to put their crumbling marriage back together, when the wife receives a letter informing her that she has a long-lost twin sister. First thinking that the new family member will bring the couple closer together, the husband then begins an affair with the sister and discovers that she is treacherous and dangerous.
Cast
Kate / Linda
Jack McLennan
Mrs. Nelles
Cassie
Deb
Walberg
Langler
Cab Driver
Twin Girl #1
Twin Girl #2
Older Man
Police Officer
