Elliot Page as Courtney

Diego Luna as Ray

Nina Dobrev as Marlo

James Norton as Jamie

Kiersey Clemons as Sophia

Beau Mirchoff as Brad Mauser

Wendy Raquel Robinson as Sophia's Mother

Kiefer Sutherland as Dr. Barry Wolfson

Madison Brydges as Tessa

Jacob Soley as Alex

Anna Arden as Alicia

Miguel Anthony as Cyrus Gudgeon

Jenny Raven as Irina Wong

Charlotte McKinney as Girl on Bicycle

Steve Byers as Marlo's Brother

Lisa Codrington as Chief Resident

Emily Piggford as Neurology Resident #1

Martha Girvin as Neurology Resident #2

Taylor Trowbridge as Lauren

Nadine Whiteman as Paramedic #1

Richard Young as The Dean's Secretary

Mary Grant as Radiologist

Stefano DiMatteo as Paramedic #2

Jimi Shlag as Burly Patient

Natasha Bromfield as ICU Nurse

Daniela Barbosa as Hayley

Jelena Savić as Conference Room Medical Student

Brian King as Chemistry Teacher

Ali Schwartz as Mean Girl #1

Dallas Poynter as Mean Girl #2

Avery Bederman as Mean Girl #3

Danny Gallagher as TEMC Dean

Jessica Rose as Puzzle Nurse

Corey Chainey as Medical Student

Janet Porter as E.R. Doctor