Sarah Michelle Gellar as Veronika

David Thewlis as Dr. Blake

Jonathan Tucker as Edward

Erika Christensen as Claire

Melissa Leo as Mari

Erica Gimpel as Nurse White

Waleed Zuaiter as Lecturer

Victor Slezak as Gabriel Durant

Adrian Martinez as Nurse #1

Florencia Lozano as Dr. Thompson

Barbara Sukowa as Mom

Matthew Cowles as Old Fred

Rena Owen as Nurse Josephine

Holter Graham as Eric Grafton

Stuart Rudin as Deluded Man Patient

Ward Horton as Guy

Meg Gibson as Pro-Pundit

John Farrer as Old Fisherman

Rafael Sardina as Nurse #2

Jill Marie Lawrence as Female Nurse #1

Lisette Bross as Work Colleague #3

Gregory Marcel as Coffee Boy

Nicolette Hart as Reporter

Victor Steinbach as Dad

Jeff Applegate as Anti-Pundit

Jessica Kaye as Bartender

Tatiana Maher as Veronika as 6 yr old

Al Roffe as Superintendent

David Skeist as Work Colleague #2

Amanda LaPergola as Shouting Patient

Tania Santiago as Work Colleague #1

Michael Harkins as Parent #1 (uncredited)

Christy Bella Joiner as Nurse (uncredited)