""
Charles Regnier
as I. Robert Oppenheimer
Hans Karl Friedrich
as Ward V. Evans
Georg Peter-Pilz
as Thomas A. Morgan
Siegfried Wischnewski
as Roger Robb
Carl Lange
as Gordon Gray
Konrad Georg
as Herbert S. Marks
Hans Epskamp
as Loyd K. Garrison
Franz Kutschera
as Borris T. Pash
Friedrich Joloff
as John Lansdale
Alexander Kerst
as Edward Teller
Kaspar Brüninghaus
as Hans Bethe
Heinz Frölich
as David Tressel Griggs
Hanns Ernst Jäger
as Isadore Isaac Rabi
Robert Freitag
as Berichterstatter
Heinar Kipphardt
Screenplay
Gerhard Klingenberg
Director
