
Police officer Jane Rydert's world is turned upside down when her older sister, Cassidy, unexpectedly appears at her door. Cassidy has spent the last sixteen years confined to a psychiatric hospital, and her return forces Jane to confront a painful past and unsettling family secrets. The reunion proves to be anything but simple as Jane struggles to understand her sister's experiences and protect her from unknown dangers.
Does A Sister’s Nightmare have end credit scenes?
No!
A Sister’s Nightmare does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of A Sister’s Nightmare, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Peyton List
Emily

Alex Zahara
Dr. Shwarzstein

Andrew Herr
Josh

Natasha Henstridge
Cassidy

Kadence Kendall Roach
Young Jane

Eric Breker
Vic

Jasmine Sky Sarin
Tina

Joel Semande
Orderly

Matthew MacCaull
Brian

Matthew Settle
Phil

Kelly Rutherford
Jane

Tim Perez
Captain

Lauren McNamara
Young Cassidy

Christopher Pearce
Jane and Cassidy's Father

Ken Camroux-Taylor
Dr. Gershman
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