John Carson
— Colonel Claus Schenk Count von Stauffenberg
Charles Lloyd Pack
— General Erich Hoepner
Patricia Denys
— Delia Ziegler
Laurie Leigh
— Anni Schmidt
Peter Copley
— General Friedrich Olbright
Michael Anthony
— Colonel Albrecht Sir Mertz von Quirnheim
Joseph Fürst
— General Fitz Fromm
Cyril Luckham
— General-Colonel Ludwig Beck
Mark Peterson
— Lieutenant Ewald von Kleist
Clive Russell
— Lieutenant Ludwig von Hammerstein
Graeme Brock
— Captain Hans Fritzsche
John Lee
— First Lieutenant Werner von Haeften
John Paul
— Dr. Bernd Gisevius
Barry Keegan
— SS General Count von Helidorf
Thomas Gallagher
— SS Oberfuhrer Piffraeder
John Abineri
— Colonel
Graham Leaman
— Receptionist
Peter Claughton
— Adjutant
Jeffry Wickham
— Major
Geoffrey Matthews
— Radio announcer