Directed by: Gerald Thomas
Starring: Kenneth Williams, Sid James, Charles Hawtrey, Sidney James, Jim Dale
Revealing mistake: When Sir Rodney leaps from the banister onto the chandelier during the fight at Chateau Neuf, it is not Sid James but a stunt double.
Revealing mistake: When the first fingernail drawing is attached to the guillotine with the knife, you can see the wire that was used to guide the knife attached to the end of it.
Continuity mistake: When Charles Hawtry is about to be beheaded, someone comes up to him saying they have a message for him. He replies with, "Toss it in the basket and I'll read it later." So she throws it in the basket, but in the next shot when you see an overhead view of Hawtry, the basket is empty.
Lady Binder: But then, you've always had magnificent balls, and I wouldn't miss one of them.
The Black Fingernail: Thank you Lady Binder.