Finding your next obsession
Finding your next obsession

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.
LUXEN Decision Guide
A tension-first choice where uncertainty, investigation, or escalating pressure is a major part of the appeal.
Best fit
Who it is for
Best suited to viewers who want a plot with questions to chase rather than a purely relaxed watch.
Commitment
Light commitment · 1h 24m
Use the runtime as a quick check against how much time you have tonight.
Start here
Read the synopsis, then check the trailer.
Read the synopsis, then check the trailer, then use the tv movie and thriller cues to decide whether the tone fits.
Cast
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