Episode #2.2 - S2-E2
Continuity mistake: When Richard and Camille intercept Dexter by the holy water pool, he has either both or just one hand on the camera, depending on the angle. (00:32:00)
Episode #2.2 - S2-E2
Continuity mistake: Sister Marguerite is mending the bike when Dwayne arrives. She halts with both hands the wheel's rotation, but in the next shot the wheel is spinning again. (00:34:20)
Episode #2.2 - S2-E2
Continuity mistake: In her passionate defense, Sister Anne's veil changes position throughout the scene - windy as it is, keeping strict continuity would have been practically impossible. (00:40:00)
Episode #2.2 - S2-E2
Character mistake: The prescription pills are labeled "Sister Therese", but Therese is not a nun yet (in the credits of the episode itself she is the one not labeled as such, but just by her name). (00:44:50)
Episode #2.2 - S2-E2
Other mistake: Sister Marguerite throughout the whole episode is wearing not very nun-like quantities of lipstick and mascara - especially considering that the head nun is depicted as strict and frowning upon things like chewing-gum.
Episode #2.2 - S2-E2
Character mistake: Throughout the episode, multiple times members of the clergy themselves talk about Therese not having yet received "holy orders." She would never have, considering that nuns only take "vows", the former are just for men.
Episode #2.3 - S2-E3
Continuity mistake: The corpse is floating with her hair going all the way towards her right when she is face down, but in the close-ups with the underwater camera her hair is floating evenly at both sides of her face. (00:02:00)
Episode #2.3 - S2-E3
Continuity mistake: When Commissioner Selwyn Patterson makes his surprise appearance at the lobby, Camille turns towards him, fully; head and body. In the next shot, she only turned her head around and her body is still towards Richard. (00:03:40)
Episode #2.3 - S2-E3
Character mistake: Richard makes it sound really special and important that the tea in the box is Camelia Sinensis...but that tells absolutely nothing, since it's simply the name of the tea plant, not a specific, precious variety of it. Your standard tea you buy at the supermarket is just as Camelia Sinensis as any other type of tea. (00:08:40)
Episode #2.3 - S2-E3
Continuity mistake: Camille puts down the shiny bag at right angle with the magazine. When they decide they have seen enough of the room after finding the pills, the bag returned to its original position, parallel to it. (00:09:20)
Episode #2.3 - S2-E3
Continuity mistake: In the first interview with one of the patients of the clinic, Camille shows sympathy for the death of her 4th husband. She says "Yes I do" and puts the cup down. Then a couple cuts later, in a reverse angle she is shown putting down the same cup again. (00:16:35)
Episode #2.3 - S2-E3
Continuity mistake: In the second interview with Camille, Paul Vincent says "She won't take no for an answer" closing his hands; both palms are open and apart after the cut. Similarly, when she says "Business or not" and there's a cut, in the second shot he has his thumbs up all of a sudden. (00:26:00)
Episode #2.3 - S2-E3
Continuity mistake: Jayne Smythe has narrowly avoided being run over by a chicken. She then looks at the card Camille gave her; she looks at it pinching it between the fingers of both hands, that in close-up are just the right hand. (00:28:45)
Episode #2.3 - S2-E3
Continuity mistake: Dwayne and Fidel are looking at the suspect leaving. When Dwayne starts saying "Aahh..." Fidel has his left arm raised, pointing. He finishes the sentence "it's called initiative" and Fidel is composed, not pointing anywhere. (00:29:55)
Episode #2.3 - S2-E3
Continuity mistake: In the interrogation after the suspect has been captured at the free clinic, Richard without logic and continuity is in some shots (usually the reverse shots with Ben Miller in foreground) with his hands behind his back, in others with his hands in front of his stomach holding the medication. (00:32:30)
Episode #2.3 - S2-E3
Continuity mistake: At Catherine's bar, Richard asks for a list of the clients of the past two years. At the cut, Camille is holding the beer by the neck, while her fingers were lower in the previous shot. (00:40:05)
Episode #2.3 - S2-E3
Factual error: At the end of the episode, Camille looks into Richard's telescope from the wrong end...and it works.
Episode #2.4 - S2-E4
Continuity mistake: Dwayne goes to investigate the accident in the caves wishing a happy weekend to his bosses. Camille then flashes two fliers; from the front, the one in her left hand is the one on top of the other, from the back, it's the right one. (00:03:45)
Episode #2.4 - S2-E4
Continuity mistake: Frustrated by getting only white noise on the telly, DI Richard Poole puts the remote down. He puts it down at a sharp angle, with most of it off the book on the stand, but in the shot featuring the iconic lizard the remote is mostly on top of the book. (00:06:00)
Episode #2.4 - S2-E4
Continuity mistake: Richard makes his way from the taxi to the camp in the jungle. He passes by the suspect wearing a denim shirt (Chris Winchester), who sports a hairdo with several curls on his forehead. Cut to him passing by the suspect with a derpy face (Daniel Morgan), and Chris is in the background, slightly out of focus but with a clear forehead. (00:07:55)
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.
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