Crime, Thriller | Jan. 14, 1966
Crime, Thriller | Jan. 14, 1966
| IMDb rating | 7.4 |
| Producers | |
| Original title | 4 Schlüssel |
| Directors | Jürgen Roland |
| Writers | Thomas Keck, Max Pierre Schaeffer |
as Alexander Ford
as Charlie
as Jensen
as Eduard Rose
as Silvia Rose
as Rolf Thilo
as Konrad von Brenken
as Irene Quinn
as Margarete Wohlers
as Vater Wohlers
as Richard Hiss
as Haushälterin
as Polizei-Offizier