Mr. Monk and the Airplane - S1-E13
Factual error: When the flight attendant announces that "they have been asked to return to the gate" the French pilot and his mistress are already celebrating with a glass of wine, but that is impossible since drinks are only served after the take off phase when the plane has reached its traveling altitude. (00:41:15)
Mr. Monk and the End - Part II - S8-E16
Continuity mistake: Trudy mentions that she had a baby fathered by her professor on Jan 2nd, 1983, before she and Adrian met and 15 years before her death on Dec. 14th, 1997. However, according to the storyline (and the episode "Mr. Monk and the Reunion"), Adrian and Trudy had first met in college, both being in the graduating class of 1981.
Mr. Monk and the Naked Man - S6-E3
Character mistake: SPOILER. Arlene Boras murders Vicki Deline in order to stop her telling Peter Magneri that he has an aortic aneurysm. Boras wants Magneri dead to clean up by short selling the stock in his company. Boras is a medical professional, and she would know that an aneurysm can burst if the patient is under stress or is shocked in some way. Allowing Deline to tell Magneri that he is in danger of dropping dead on the spot would kill him, which is exactly what she wants.
Mr. Monk and the Naked Man - S6-E3
Character mistake: SPOILER ALERT Monk accuses Arlene Boras of swapping Peter Magneri's X-rays in order to hide the fact that he has a potentially lethal aortic aneurysm. We see Magneri being examined and we see Boras handling his records, and they are not X-rays. Magneri was examined in an MRI scanner and Boras swaps the MRI scans - not X-rays.
Mr. Monk and the Big Game - S5-E3
Factual error: The hair dryer would not have hurt anyone as it was plugged into a FCI outlet. These outlets will immediately sense the interruption and cut the power to ensure electrical safety. The coach would have been alive. (00:02:23)
Mr. Monk and the Big Game - S5-E3
Character mistake: When Julie asks "who discovered DNA?", Captain Stottlemeyer says "Watson and Crick. Two British scientists." However, James Watson is American (as of 2021 he's still alive), not British. And the duo only discovered the structure of DNA, not DNA itself. As much knowledge as the Captain demonstrates on the subject, he should know these two facts at least.
Mr. Monk and the Actor - S5-E1
Continuity mistake: At the end, when Monk is in Dr. Kroger's office, when he says "it's nice to be home", you see Dr. Kroger putting on his glasses. When the camera angle changes, he's putting his glasses on again.
Continuity mistake: When Monk is asking Ms. Moody if the roof is known, she's crying into both her hands. But in the next shot, she's only crying into her left hand and her right hand is down. The shot changes, and we see her lowering her right hand, not left. In the next shot her left hand is up again.
Continuity mistake: In the beginning, we see Cassie with her watch on her left wrist. But in the shot with both her hand on Joseph's back, the watch is on her right wrist.
Mr. Monk Is on the Run (2) - S6-E16
Continuity mistake: When Monk and Natalie are watching the video of Dale, Monk puts his hand behind the screen (like he's blocking the sun to see it better) and Natalie is holding it on the bottom. When the shot changes to the screen, there're no hands behind it.
Mr. Monk Is on the Run (2) - S6-E16
Other mistake: The article about the "Car Wash Columbo" repeats itself after it mentions he's named after the famous T.V. detective.
Mr. Monk and the Three Julies - S6-E13
Other mistake: When Natalie sits down with Randy eating ice cream, she's says "vanilla fudge, my favorite." But the carton is labeled "chocolate." Plus Randy says he got it out of her freezer, so she would know she bought just regular chocolate ice cream.
Mr. Monk and the Man Who Shot Santa - S6-E10
Continuity mistake: The amount of stuffed animals on Natalie's hood change depending on the camera angle, as she and Monk are talking before he goes up to the roof.
Mr. Monk and the Daredevil - S6-E7
Continuity mistake: When Joey hands the kids back the poster they drew, it's folded in his hands. In the next shot, it's rolled up.
Mr. Monk and the Daredevil - S6-E7
Other mistake: The newspaper article about Harold is just gibberish and random keystrokes.
Mr. Monk Visits a Farm - S5-E14
Continuity mistake: When Jimmy is talking to Harvey, after Harvey refuses the money, he puts his hand on Harvey's shoulder. But the next shot, it's off. It switches to back on depending on the camera angle.
Mr. Monk Is At Your Service - S5-E12
Continuity mistake: When Paul shoots his butler, you see him raise his arm up straight out, but in the next shot, his arm is lowered with his elbow bent.
Mr. Monk and the Leper - S5-E10
Continuity mistake: At the meeting, the pencils on the yellow pad on the table keep changing position depending on the camera angle.
Mr. Monk Meets His Dad - S5-E9
Other mistake: When Jack Monk is filling up his truck, the numbers on the pump don't add up right and keep changing. The cost is $3.599/gallon, but in one shot you see the sale price reads $93.78 for 28.348 gallons. The sale price should be $102.02. But in a later shot, he's only pumped 27.126 gallons. Then when he hits $100 sale price, it's for 31.259 gallons ($3.199/gallon) but in the next shot it reads 27.719 gallons.
Mr. Monk Meets His Dad - S5-E9
Continuity mistake: When Monk is looking through the boxes on the trailer, on the first shot, the box marked "Tucson" isn't flush with the box underneath. But after, it's flush without anyone touching it.
