Martin Held as Erich Gimpel

Nadja Tiller as Joan Kenneth

Walter Giller as Billy Cole

Gustav Knuth as Roger Bentley

Viktor Staal as Oberst Sommerfeld

Claude Farell as Inge Hagen

Heinz Drache as Jim Newman

Günter Pfitzmann as Korvettenkapitän Hilbig

Werner Peters as Gefängiswärter Jonny

Stanislav Ledinek as Mr. Brown

Martin Kosleck as Griffins

Reinhold Bernt as U-Boot-Steuermann

Franz Nicklisch as Mann im Rollstuhl

Ralph Lothar as Paolo Santo

Ernst Stahl-Nachbaur as Atomprofessor

Hans Waldemar Anders as Becker

Joachim Boldt as

Rudolf Brand as

Kurt Buecheler as

Hellmut Grube as

Josef Kamper as

Gert Kollat as

Erik von Loewis as

Gerd Martienzen as

Friedrich Maurer as

Manfred Meurer as

Waltraut Runze as

Oscar Sabo Jr. as

Arthur Schilsky as

Harro ten Brook as

Herbert Wilk as

Lisa Lesco as Singer