Continuity mistake: There is a shot where Randy is trying to cross the police tape and an officer stops him, and he can be seen briefly arguing. However, when it cuts to the next shot, we see that argument happening again in the background, repeated. (00:07:20)
Continuity mistake: Monk pushes aside a glass of milk on the table in his apartment. It is mentioned multiple times during the series that Monk is afraid of milk. He would never have any in his home, and certainly wouldn't have a neutral reaction to it. Also, the milk appears to have spilled a little as it was pushed, and yet in the next shot there is no milk on the table. (00:33:00)
Continuity mistake: There are two noticeable continuity errors during the police investigation in Cassie Drake's house. When Stottlemeyer is squatting next to Monk, Monk's right hand instantly changes position between shots. Also notice that there is no sheet over the body at the beginning of the scene, but a few shots later, suddenly the lower part of Cassie's body is covered with a sheet despite no forensic technicians being there to place it. (00:27:00 - 00:27:30)
Continuity mistake: When Monk is doing the summation for the present-day case with Sherry's ex-husband sitting in the chair, at first you can see that the painting is directly behind him. However, shortly thereafter during the summation, the painting has somehow shifted to the viewer's left and is no longer directly behind him. While it's plausible that someone could have moved the painting, it's just not believable since less than a minute has passed. Besides, would Lt. Disher (he was closest) really take it upon himself to move evidence?
Continuity mistake: When the gunman is shooting at the Jeep, he hits and deflates the near side rear tyre. His only shot after this wounds the sheriff. Yet when Monk is walking next to the Jeep, both tyres on this side are flat. Then when Monk starts going for help, the two tyres on the other side are now flat.
Continuity mistake: In Season 6, Episode 16, "Mr Monk Is On The Run Part 2,," Natalie is organising his funeral after Monk is announced dead in the previous episode. She is talking to Randy and says she found a picture of him smiling. You see the photo of Natalie, Adrian and Julie on Christmas Eve. This picture was taken in Season 6, Episode 10, "Mr Monk and the Man who Shot Santa Clause". In the photo you can see the three of them smiling. But when you see the picture taken on Christmas Eve, Adrian is not smiling. He has a disgusted look on his face after he ate a cookie. Also when the picture was taken, Julie was smiling with her mouth closed but in the photo she is smiling with her teeth.
Continuity mistake: Near the end when Monk is doing his usual "Here's what happened" speech, he hands an envelope to the dad. A few minutes later he walks away from the dad, who still has the envelope in his hand. Immediately, the shot changes and Monk, who is not near the dad, has the envelope.
Continuity mistake: The lighting and position of the sun changes constantly throughout the episode and between scenes. For example, when Monk and Natalie are at the first aid tent, it looks cloudy and the lighting suggests that it is midday. Yet in the very next scene, when Monk, Natalie and Kendra catch up to Stottlemeyer, Disher and Jared, it appears to be sunny and late afternoon/early evening. (00:19:00 - 00:25:05)