The Case of the Moth-Eaten Mink - S1-E13
Plot hole: Perry Mason and Della Street are having dinner at a restaurant owned by Morey Allen. When waitress Dixie Dayton sees a diner who has been stalking her, she flees and is hit by a car. The next morning, Perry's incoming mail includes a retainer from Allen. His letter and check would not have arrived until the following day, at the earliest.
The Case of the Deadly Toy - S2-E27
Plot hole: Claire Allison spends the night in an upstairs bedroom in the Jennings' home. In the middle of the night, she opens a walk-in closet to get another blanket and finds a small printing press. Later in the day, Claire returns to the home, accompanied by Perry Mason, who tells Mr. Jennings that Claire has received threatening letters from Mrs. Jennings' former husband, who still has a key to the Jennings' home, and the printing press may have been used to address the envelopes. Mr. Jennings says, "We'd better investigate" and immediately goes upstairs and opens the closet, even though neither Claire nor Perry Mason said where Claire saw the printing press.
