Unsane

Claire Foy

Sawyer Valentini

Joshua Leonard

David Strine

Jay Pharoah

Nate Hoffman

Juno Temple

Violet

Aimee Mullins

Ashley Brighterhouse

Amy Irving

Angela Valentini

Sarah Stiles

Jill

Marc Kudisch

Bank Manager

Colin Woodell

Mark

Myra Lucretia Taylor

Counselor

Lynda Mauze

Dolores

Zach Cherry

Dennis

Polly McKie

Nurse Boles

Raúl Castillo

Jacob

Michael Mihm

Steve

Robert Kelly

Steve's Partner

Natalie Gold

Female Patient

Sol Marina Crespo

Female Patient

Will Brill

Male Patient

Steven Maier

Male Patient

Matthew R. Staley

Medical Technician

Matt Mancini

Medical Technician

Emily Happe

Friendly Nurse

Gibson Frazier

Dr. Hawthorne

Erin Wilhelmi

Hayley

Joseph P. Reidy

Lawyer

Matt Damon

Detective Ferguson

Erika Rolfsrud

Medical Examiner

Elizabeth Goodman

TruthBite Editor

Roshanna Jenkins

Federal Agent

Lance Coughlin

Police Officer (uncredited)

Kevin Dean O'Connor

George Shaw (uncredited)

Ursula Triplett

Arresting Police Officer (uncredited)