'A naval lieutenant and his sweetheart prevent a German spy from destroying the British fleet.' (British Film Institute)
| Actor | Role |
|---|---|
| HHelene GingoldRev Christian St George / Saint George | Rev Christian St George / Saint George |
| PPercy MoranRN Lieutenant Stephen English | RN Lieutenant Stephen English |
| MMargaret ShelleyMary Marshall | Mary Marshall |
| LLeonard ShepherdThe Kaiser | The Kaiser |
| RRoy TraversThe Kaiser's Foreign Secretary | The Kaiser's Foreign Secretary |
| LLionel d'AragonSir Charles Rosenbaum | Sir Charles Rosenbaum |
| AAlfred CollinsSecretary | Secretary |
| TThomas CanningJohn Marshall | John Marshall |
| HHelen SomersMrs Marshall | Mrs Marshall |
| AAuguste McCouloughWalter Marshall | Walter Marshall |
| RR. van CourtlandPercy Marshall | Percy Marshall |
| BBertram CarterSubmarine Commander | Submarine Commander |
| FFrank LyndonAzrael, Angel of Death | Azrael, Angel of Death |