Produzione

• Everett Chambers — supervising producer
• Gerald W. Abrams — executive producer
• Bruce J. Sallan — executive producer
• Richard M. Rosenbloom — supervising producer
• Steve Nicolaides — producer
• Willy Egger — production executive

Fotografia

• Igor Luther — director of photography

Sonoro

• Dana Kaproff — music

Scenografia

• Albrecht Konrad — art direction
• Jan Schlubach — art direction
• Jan Schlubach — production design

Sceneggiatura

• Donald Lindquist — book
• John Gay — screenplay

Montaggio

• Gregory Prange — editor

Costumi e trucco

• Ingrid Zoré — costume design

Cast

• Richard Thomas — Sandy Mueller
• Horst Buchholz — Emerich Weber
• José Ferrer — Martin Komansky
• Ute Christensen — Ilse Morrell
• Jacques Breuer — Joachim Lentz
• Nicholas Farrell — Georg Heptner
• Kenneth Griffith — Bruno Balderbach
• Robert Freitag — Dr. Lentz
• Gerald W. Abrams — Phil
• Ilse Bahrs — Butcher Customer
• Pasqual Breuer — Wolf Lentz
• Carl Duering — Klaus Schoenemann
• Josef Ernst — German Border Guard
• Klaus Götte — Intelligence Officer
• Günther Maria Halmer — Herr Klemnitz
• Irene Jarosch — Woman in Crowd
• Wolfgang Jörg — Konrad Moss
• Charlotte Kerr — Marta Kurzman
• Hans Madin — Herr Weber
• Joachim Mock — Workman
• Dorothea Moritz — Frau Heptner
• Peter Neusser — Lt. Geller
• Uwe Paulsen — Karl
• Eva Ingeborg Scholz — Frau Lentz
• Jochen Schroeder — Vopo
• Katharina Seyferth — Greta Dohr
• Walter Tschernich — Herr Dohr
• Heinz Weiss — Herr Heptner
• Georg Richard Wenkhaus — Vogel Chief Officer
• Inge Wolfberg — Greta's Friend
• John F. Kennedy — Self - US President (archive footage)

Regia

• Richard Michaels — director