When Margot reached for the scissors, he could see that there was a pair of exactly the same scissors on Les' shoulders, and this pair of scissors had been inserted into Les's back.
When Tony and Margot discussed what she should do tonight, Tony pulled the curtain behind the desk; in the next shot, the curtain was opened.
When Tony met Dawson for the first time, he held a cane stick in his hand; in some shots, he leaned his chin against the end of the cane, while in other shots, the cane suddenly became shorter. So that it can't reach the height of Tony's chin.
When the detective called in the apartment, he assumed that the location was in London, but on the other end of the phone was a person with an American accent speaking, and the person who was actually speaking should have a British accent.
In "Telephone Murder", Margot once referred to Mark as "Bob".
During the trial, the date of the murder clearly indicated that it was September 26; but when Mark checked Tony’s checkbook, he said that March 26 was the time of the murder.
