Revealing mistake: When the band in the nightclub performs the made up song "Mr. Music Man", the suave Mr. Stone, the musician Miss Fisher ends up dancing with, is doing one heck of an hilariously incompetent job at faking to play an instrument, basically playing air-banjo strumming about 3 inches above where the chords are, and wildly off tempo. In the closing bit of the song (as the singer sings "To sin") he even moves his hand at the side of the strings and not above them. (00:03:30)
Miss Fisher's Murder Mysteries (2012)
1 revealing mistake in The Green Mill Murder
Starring: Essie Davis, Ashleigh Cummings, Hugo Johnstone-Burt, Nathan Page
Factual error: The snub nosed revolver used by Miss Fisher, a J-Frame S&W, was not produced until 1950.
Answer: Louisa's watch was broken during the struggle to get away from her attacker.
Bishop73