The Good Sister

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.

Trailer

Cast

Sonya Walger

Kate / Linda

Ben Bass

Jack McLennan

Bobbie Phillips

Mrs. Nelles

Ashleigh Harrington

Cassie

Alarey Alsip

Deb

Michael Hearn

Walberg

Noel Burton

Langler

Sam Stone

Cab Driver

Emma Dimig

Twin Girl #1

Sonia D'amico

Twin Girl #2

Howard Harris

Older Man

Simon Anthony

Police Officer

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Availability for the US. Data from JustWatch.