London at the turn of the century. Three men are on a mission from the IRA to steal all the gold in the vaults of the Bank of England. Norgate, their leader, discovers the bank's weak spot: an old forgotten sewer straight under the vaults.
| Actor | Role |
|---|---|
 Aldo RayCharles Norgate | Charles Norgate |
 Elizabeth SellarsIris Muldoon | Iris Muldoon |
 Peter O'TooleCapt. Monty Fitch | Capt. Monty Fitch |
 Kieron MooreWalsh | Walsh |
 Albert SharpeAlbert Tosher Sparrow | Albert Tosher Sparrow |
 Joseph TomeltyCohoun | Cohoun |
| WWolf FreesDr. Hagen | Dr. Hagen |
 John Le MesurierGreen | Green |
 Miles MallesonAssistant Curator | Assistant Curator |
 Colin GordonBenge | Benge |
 Andrew KeirSergeant of the Guard | Sergeant of the Guard |
 Hugh GriffithO'Shea | O'Shea |
 Arthur LoweBank Official (uncredited) | Bank Official (uncredited) |