Continuity mistake: As the the first conversation between Miss Fisher and her cousin's belle begins, when she mentions "That dazzling party in Charing Cross" she has her hand on the newspaper, but it is on her shoulder at the cut. And then Miss Fisher puts a hand above the hip, changing position at the following cut as well. (00:08:00)
Continuity mistake: When Bert and Cec put their groceries down in the kitchen, Cec takes his hat off, Bert does not and shows no contempt about it. After a brief cut, once Miss Fisher is exiting the room Bert is now without his hat. (00:13:50)
Factual error: When Miss Fisher takes the teacup from Hugh to bring it to the housekeeper, she passes by the calendar. It shows December 17 as being a Saturday, not consistent with the year of the show. (00:30:55)
Factual error: When Mr. Butler takes the hashish-laced cake, "It Don't Mean a Thing (If It Ain't Got That Swing) " is playing, composed in 1931, later than the 1928 setting.
Continuity mistake: When cousin Guy tells Miss Fisher "You like your meat tender too", Isabella is sipping from the drink she lowered in the previous shot. (00:32:00)
Continuity mistake: When Miss Fisher as Cleopatra loosens Jack's tie, what remains of the knot is different in the separate shots. (00:38:25)
Answer: Louisa's watch was broken during the struggle to get away from her attacker.
Bishop73