The time of the French revolution, and Citizen Robespierre is beheading the French aristocracy. When word gets to England, two noblemen, Sir Rodney Ffing and Lord Darcy Pue take it upon themselves to aid their French counterparts. Sir Rodney is a master of disguise, and becomes "The Black Fingernail", scourge of Camembert and Bidet, leaders of the French secret police.
| Directing | Gerald Thomas | Director |
| Production | Weston Drury Jr. | Casting |
| Editing | Rod Nelson-Keys | Editor |
| Writing | Talbot Rothwell | Screenplay |
| Sound | Eric Rogers | Original Music Composer |
| Art | Lionel Couch | Art Direction |
| Camera | Alan Hume | Director of Photography |
| Production | Peter Rogers | Producer |
| Costume & Make-Up | Emma Selby-Walker | Costume Design |
| Costume & Make-Up | Stella Rivers | Hairstylist |
| Costume & Make-Up | Geoffrey Rodway | Makeup Artist |
| Production | Jack Swinburne | Production Manager |
| Directing | Jack Causey | Assistant Director |
| Sound | Ken Barker | Sound Recordist |
| Sound | Dudley Messenger | Sound Recordist |
| Camera | James Devis | Camera Operator |
| Crew | Terry Gilbert | Choreographer |
