Theodore Hall

Self (archive footage)

Joan Hall

Self

Joseph Albright

Self

Marcia Kunstel

Self

Daniel Axelrod

Self

J. Michael Wright

Ted Hall

Lucy Zukaitis

Joan Hall

Nicolas Eastlund

Savy Sax

Mickey O'Sullivan

FBI Agent McQueen

Tom Goodwin

FBI Agent 3

Zach Twardowski

Ed Hall

Olivia Piper

Young Ruthie

Enzo Inalsingh

Sax baby

Kate Marie Smith

Susan Sax

Leslie Groves

Self (archive footage) (uncredited)

J. Robert Oppenheimer

Self (archive footage) (uncredited)

Joseph E. Davies

Self (archive footage) (uncredited)

Walter Huston

Self (archive footage) (uncredited)

Ann Harding

Self (archive footage) (uncredited)

Manart Kippen

Self (archive footage) (uncredited)

Harry S. Truman

Self (archive footage) (uncredited)

Dwight D. Eisenhower

Self (archive footage) (uncredited)

Henry L. Stimson

Self (archive footage) (uncredited)

Joseph Stalin

Self (archive footage) (uncredited)

Paul Tibbets

Self (archive footage) (uncredited)

Julius Rosenberg

Self (archive footage) (uncredited)

Ethel Rosenberg

Self (archive footage) (uncredited)