A British man is hunted by British and German spies when he tries to sell blueprints.
| Actor | Role |
|---|---|
 Bruce CabotCarl Beyersdorf / Ted Healey | Carl Beyersdorf / Ted Healey |
| MMarta LabarrFreyda Healey | Freyda Healey |
 Tamara DesniMarie Dufreyne | Marie Dufreyne |
 Romilly LungeBeverley Blake | Beverley Blake |
| EEdward LexyDet. Insp. William Barnard | Det. Insp. William Barnard |
 Cyril SmithDet. Sgt. Trotter | Det. Sgt. Trotter |
| PPercy WalshOtto Lemnel | Otto Lemnel |
| EEve LyndFlorrie McGowan | Florrie McGowan |
| AAlexander FieldYorkie Meane | Yorkie Meane |
 Hilary PritchardToni Vencini | Toni Vencini |
| DDavina WhitehouseMabel | Mabel |
| VVincent HolmanHawker | Hawker |
| AAnthony ShawCommander Anderson | Commander Anderson |
 Peter GawthorneSir John | Sir John |
| BBernard JukesHubert Kessler | Hubert Kessler |
| NNino RossiniSammy | Sammy |
| RRosaritoDancer | Dancer |
| KKen JohnsonAnd His West Indian Band | And His West Indian Band |
 Frederick ValkGerman Ambassador | German Ambassador |