Bezet Joegoslavië. Nu het georganiseerde verzet door de nazi-aanval is verbrijzeld, zijn het alleen de activiteiten van kleine guerrillabendes die de mensen nieuwe hoop geven. Maar quislings en infiltranten zijn overal – en als je de verkeerde persoon vertrouwt, kun je gemakkelijk worden gedood...
Nee, helaas is Undercover nog niet beschikbaar op Netflix in Nederland.
| Directing | Sergei Nolbandov | Director |
| Production | S.C. Balcon | Associate Producer |
| Production | John Croydon | Production Supervisor |
| Camera | Wilkie Cooper | Camera Operator |
| Costume & Make-Up | Doris Zinkeisen | Costume Design |
| Sound | Eric Williams | Sound Supervisor |
| Editing | Sidney Cole | Supervising Editor |
| Production | Hal Mason | Unit Manager |
| Production | Ronald Brantford | Unit Manager |
| Crew | W.E. Hart | Technical Advisor |
| Sound | Len Page | Sound Recordist |
| Editing | Eily Boland | Editor |
| Writing | John Dighton | Screenplay |
| Writing | Monja Danischewsky | Screenplay |
| Writing | George Slocombe | Story |
| Production | Michael Balcon | Producer |
| Sound | Frederic Austin | Music |
| Camera | Wilkie Cooper | Director of Photography |
| Sound | Ernest Irving | Music Director |
| Crew | Roy Kellino | Special Effects |
| Art | Duncan Sutherland | Art Direction |
| Camera | Hal Britten | Camera Operator |
