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.
Sid James
Jim Dale
Dany Robin
Kenneth Williams
Charles Hawtrey
Joan Sims
Peter Gilmore
Marianne Stone
Michael Ward
Leon Greene
David Davenport
Richard Shaw
Valerie Van Ost
Jennifer Clulow
Peter Butterworth
Monika Dietrich
Jacqueline Pearce
Patrick Allen