Espionage thriller about a married couple caught in the middle of dueling spy organisations.
| Actor | Role |
|---|---|
 Hansjörg FelmyKlaus Martens | Klaus Martens |
 Johanna von KoczianGitta Martens | Gitta Martens |
 Hannes MessemerBraun | Braun |
 Ingeborg SchönerMarianne Gardella | Marianne Gardella |
 Hanns LotharStefan | Stefan |
 Gernot DudaJanos | Janos |
 Klaus HavensteinBeamter | Beamter |
 Olga von TogniOlga Hajek | Olga Hajek |
 Paul VerhoevenKarel | Karel |
 Walter SedlmayrNot listed | Not listed |
 Willy SemmelroggeLauer | Lauer |
| MMax MairichFischer | Fischer |
| RRosel SchäferDaidy Winter | Daidy Winter |
| PPeter LührDr. Becker | Dr. Becker |
| AAlexander HunzingerHerr Wagentritt | Herr Wagentritt |
| HHelmut BraschHerr Grasdorffer | Herr Grasdorffer |
| EEttore CellaLuigi Gardella | Luigi Gardella |
| RRolf KralovitzHerr Berger | Herr Berger |
| GGerhard JustHerr Liebermann | Herr Liebermann |
| FFranziska LiebingFrau Liebermann | Frau Liebermann |
| AAnton ReimerKriminalinspektor | Kriminalinspektor |