In the murder scene you can see a bare stucco wall behind the action. The walls in the hotel room the murder took place in are smooth with pictures spaced closely together.
When Chuck Byrn is walking up to the stage Monk also appears walking up to the bartender and begins speaking to him. In the following scene, Monk is walking up to the bartender again.
When Monk, Rita and Mr. Landis are talking in front of the elevators (right after the maid quitting scene), the blonde in the white top walks by twice.
When Benjy's coin goes under the video game, the bow of the glasses is visible, but when he bends down to get the coin, the bow has mysteriously disappeared.
When Monk tells Benjy he's proud of him, he buttons up his shirt twice.
Bronwyn suggests having the IRS investigate a suspect for insider trading. The IRS would investigate suspected tax evasion; insider trader would be investigated by the Securities and Exchange Commission (SEC).
Liberation Day in Hong Kong is not a national holiday. The stock market is not closed.
When Rita turns on the light in Monk's room, the switch comes loose. She does not react or notify anyone.
When the four cleaning ladies are talking to their boss about how Lupe quit, there are camera "marks" where the actors must stand on the floor.
Bronwyn says she is using an infrared lamp to detect bodily fluids, but the lamp would need to be ultraviolet.