A spy has his son steal an Admiral's submarine plans.
| Actor | Role |
|---|---|
 Evelyn LayeCynthia Eden | Cynthia Eden |
 Henry VictorLt. Clive Stanton | Lt. Clive Stanton |
 Hayford HobbsLouis Peel | Louis Peel |
| NNorma WhalleyMrs. Peel | Mrs. Peel |
| HH. Agar LyonsColonel Dupont | Colonel Dupont |
| WWilliam FreshmanWing Eden | Wing Eden |
 Zoe PalmerDora Green | Dora Green |
| BBurton CraigLord Nelson | Lord Nelson |
| RRobert CunninghamAdmiral Maybridge | Admiral Maybridge |