The Case of the Wandering Widow - S4-E6
Continuity mistake: Perry and Paul go to the park at ten o'clock at night but the sun is shining and casting shadows.
The Case of the Borrowed Baby - S5-E26
Continuity mistake: Mason takes the medallion back from the matriarch as he leaves her home. A little later the old lady shows up at Della's and shows the medallion to Della.
The Case of the Borrowed Baby - S5-E26
Continuity mistake: As Della burps the baby she has a towel over her shoulder one instant; in the next scene the towel is missing.
The Case of the Laughing Lady - S9-E1
Continuity mistake: Professor Toby is shown in the background as someone in the audience is highlighted, but is supposed to be on the witness stand and appears there in the next instant.
