Wormwood

Eric Olson

Self - Frank Olson's Son

Peter Sarsgaard

Frank Olson

Molly Parker

Alice Olson

Christian Camargo

Dr. Robert Lashbrook

Tim Blake Nelson

Sidney Gottlieb

Scott Shepherd

Vin Ruwet

David Rudovsky

Self - Olson Family Attorney

William Colby

Self (archive footage)

David Kairys

Self - Olson Family Attorney

Bob Balaban

Dr. Harold A. Abramson

Richard Helms

Self (archive footage)

Dick Cheney

Self (archive footage)

Donald Rumsfeld

Self (archive footage)

Seymour Hersh

Self (archive footage)

Richard Boothby

Self - Professor of Philosophy

Harry Huge

Self - Attorney

Stephen Saracco

Self - Assistant District Attorney

Jimmi Simpson

CIA Agent

Jack Doke

Young Eric Olson

Robert Mitchum

Jeff Bailey (archive footage)