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