Eliza Dushku character Pia Carter
Robert Patrick character Doctor H.H. Greiss
Chace Crawford character Jacob Martin
P. J. Byrne character Scott Carter
Brandon T. Jackson character Dell Richards
Nicole Forester character Genevieve Martin
Milica Govich character Nurse Fletcher
Ricky Wayne character Detective Frazer
Jordan Trovillion character Garage Girl
Heather Fairbanks character Nurse (uncredited)
Amber Whelan character Mental Patient (uncredited)
Camille Bresie Cooke character Nurse Carter
Art Beer character Arlen Davies
Annie Kitral character Administrator
Dan Lemieux character Orderly 1
Matt Philliben character Orderly 2
Big Ron Lyons character Orderly 3
John Lepard character Doctor
Anthony Bowden character Urban Explorer 1
Schuyler Whitesell character Urban Explorer 2
Josh Aspiranti character Familiar Orderly
Andrew Huff character Ragged Man
Anton Bassey character Fire Marshal
Mark Rademacher character Garage Owner
Tim Holmes character Huge Orderly
Paul W. Smith character Interviewer
Alan Cohen character Security Officer
Mary Jo Cuppone character Staff Doctor
Lawanda Starr Nance character Nurse
Jim Porterfield character Past Security Officer
Dan John Miller character The Patient
Alastar Dimitrie character Student 1
Tiren Jhames character Isaan Martin
Sofia Tepper character Young Pia
Jeremy Pastoria character Young Scott
Jessica Ashley character Candy Striper
Sandro Rodriguez character Orderly 4
John Dickerson character Old Patient
Michael Alexander character Orderly (uncredited)
Billie Rae Bates character Mental Patient (uncredited)
Mary C. Bliss character Mental Patient (uncredited)
Michael Stephen Bryant character Mental Patient (uncredited)
Michael Bugard character Mental Patient (uncredited)
Tiffany Burns character Nurse (uncredited)
Deb Fernandez character Nurse (uncredited)
Michael Haase character Firefighter (uncredited)
Laura Hanna character Mental Patient (uncredited)
Krystal Huffman character Mental Patient (uncredited)
Martin Klebba character Mental Patient (uncredited)
Thomas Lee character Medical Intern (uncredited)
Eric M. Myrick character Orderly (uncredited)
Rose Anne Nepa character Mental Patient (uncredited)
Wendy Peterson character Mental Patient (uncredited)
Manny Sandow character Orderly (uncredited)
George Seder character Firefighter (uncredited)
Dawn Turchin character Student (uncredited)
