Episode #4.4 - S4-E4
Other mistake: On the first day of investigations, Florence says that "two days ago" the victim withdrew a large sum of money. A CCTV shot is shown later in the episode, establishing that day as March 9th 2015 - remarkably consistent with the date of the previous episode and the coroner's report. So it is the 11th, and the investigation concludes on the 12th, a Thursday. However, at the end of the episode, Dwayne says that it's Saturday.
Episode #4.4 - S4-E4
Continuity mistake: When the culprit says "You both have", they have their hand on the jumper, hand on the chin, hand on the jumper again. (00:44:15)
Episode #4.4 - S4-E4
Continuity mistake: In the sequence with Camille handing Humphrey the marker that tips his conscience, he is holding the cork in different ways between the various shots. (00:34:35)
Episode #4.4 - S4-E4
Continuity mistake: Camille answers the phone of the police station. Humphrey is biting his nails...but it's the nails of his left hand in one shot, right hand in the other. (00:30:00)
Episode #4.4 - S4-E4
Continuity mistake: Catherine arrives bringing beer. She puts one next to Camille, and the neck label is positioned with the part with no logo facing the camera. In the following close-ups of Sara Martins though, the yellow circle with anchor logo is facing the camera. (00:24:20)
Episode #4.4 - S4-E4
Continuity mistake: Humphrey uses a blue paper tissue to try and write down the pros and cons list; in the table close-up, the cup of goobers and the coaster are roughly aligned on the same plank, while they are at greater distance in the other shots. (00:23:40)
Episode #4.4 - S4-E4
Continuity mistake: In the sequence with Humphrey slipping and eventually falling from the railing, Kris Marshall's position keeps changing - as easily revealed by the distance from the bars of the railing. (00:21:25)
Episode #4.4 - S4-E4
Continuity mistake: After Betty says "But I did love Jenny", her right hand is raised to the glass, something that does not match the previous and following shot. (00:19:50)
Episode #4.4 - S4-E4
Continuity mistake: Humphrey speaks with the groom, and then walks away. He moved barely a couple meters, and walking on the dock there are extras (the woman in purple that was shopping at the stall, and the woman sitting by the boat.) that made rather significant jumps in space and time to be there. (00:16:55)
Episode #4.4 - S4-E4
Continuity mistake: Commissioner Selwyn Patterson sneaks into the police station. Dwayne spots him; in close-up, the table lamp is angled lower and switched on, as opposed to the rest of the scene. (00:13:00)
Episode #4.4 - S4-E4
Continuity mistake: Humphrey passes the cork to Dwayne holding it with the palm pointed up in the first shot, down in the second. (00:08:10)
Episode #4.4 - S4-E4
Continuity mistake: Florence unfurls the evidence bag twice in different ways in separate shots when Goodman mentions that the victim couldn't have opened the door coming out of the tub, and similarly moves the pink scrapbook to her left twice. (00:07:30)
Episode #4.4 - S4-E4
Continuity mistake: Kris Marshall is holding the scrapbook the first time in two completely different ways (hand in the middle or not) depending on the camera angle that alternate. (00:07:00)
Episode #4.4 - S4-E4
Continuity mistake: DI Humphrey Goodman is holding the jasmine candle in close-up with his fingers at the top, but in the next shot his fingers are at towards the bottom of the glass. (00:06:30)
Episode #4.4 - S4-E4
Continuity mistake: Humphrey is talking to the hotel staffer, and goes back to the bathroom to check the candles as he asks if they came with the room. Camille holds the notepad tilted towards her, but the next shot starts with her pad tilted the opposite way. A moment later, Florence opens her own pad, and re-opens it when DI Goodman is back with the candle. (00:06:25)
Episode #4.4 - S4-E4
Continuity mistake: When Florence checks the wash bag to see if the victim was using any bath salts, the notepad is turned differently in hand between shots. (00:05:15)
Episode #4.4 - S4-E4
Character mistake: Close captions in the episode write down the Frenglish mish-mash by Goodman as "leoffer" without space, when he's saying "le offer" ("offer" in French is "offre", but he's just making a joke, with "le" making automatically everything sound French).
Answer: There's probably no particular reason. Sets and props on long-running TV shows often change as needed and for various reasons throughout a series run.
raywest ★