Peter Sarsgaard

as Dr. Frank Olson

Molly Parker

as Alice Olson

Tim Blake Nelson

as Dr. Sidney Gottlieb

Michael Chernus

as Mal

Jack Doke

as Young Eric Olson

Christian Camargo

as Dr. Robert Lashbrook

Scott Shepherd

as Lt. Col. Vincent Ruwet

Bob Balaban

as Dr. Harold Abramson

Jimmi Simpson

as tbd