In der Sache J. Robert Oppenheimer

Hans-Michael Rehberg

as Robert J. Oppenheimer

Hans Quest

as Gordon Gray

Dieter Borsche

as Ward V. Evans

Herbert Mensching

as Roger Robb

Dietrich Mattausch

as C. A. Rolander

Michael Degen

as Edward Teller

Kurt Meisel

as Isadore Isaac Rabi

Gerd Anthoff

Toni Berger

Karl Lieffen

Heini Göbel

Horst Sachtleben