Physicist Ted Hall is recruited to join the Manhattan Project as a teenager and goes to Los Alamos with no idea what he'll be working on. When he learns the true nature of the weapon being designed, he fears the post-war risk of a nuclear holocaust and begins to pass significant information to the Soviet Union.

Theodore Hall
as Self (archive footage)

Joan Hall
as Self

Joseph Albright
as Self

Marcia Kunstel
as Self

Daniel Axelrod
as Self

J. Michael Wright
as Ted Hall

Lucy Zukaitis
as Joan Hall

Nicolas Eastlund
as Savy Sax

Mickey O'Sullivan
as FBI Agent McQueen

Tom Goodwin
as FBI Agent 3