Character mistake: A computer display of currency transactions shows the word "withdrawal" spelled as "withdrawl." (It is also spelled correctly higher up on the display). (00:25:05)
Character mistake: JP says, twice, that the tapes found at the shack are from the same day Jasmine was murdered. Jack then says "June 5th, 1988." But as Commissioner Selwyn Patterson said, Jasmine was killed June 3rd. Jack repeats the date being the 5th later after the visit to Leon. Who's right, is anybody's guess. (00:14:25 - 00:31:20)
Character mistake: Interrogating Delmar Brown, Jack mentions to him that "Back in '85, the band went on tour to Europe." But the tour, as established by the Commissioner, Dwayne and Florence's bank statements, happened in 1988. (00:19:40)
Character mistake: Commissioner Patterson begins the narration of the past events with a date, June 3, 1988. It's the day Jasmine died. When Dwayne a couple minutes talks about the band splitting, he mentions that there had been tension before that incident, and says that the band in the summer of 1988 had a tour planned, but Jasmine put a halt to it halfway through. It seems kinda difficult for someone who dies in early June, to put a halt halfway through a summer tour (and that fact being presented as something completely distinct from the person's death). (00:14:25 - 00:16:30)
Character mistake: Dwayne tells Jack on the crime scene that the victim (who had two aces, with one ace on the board) he had "three of a kind or as the pros say, trips." Pros don't say "trips" to that though, since "trips" happens when two cards matching one you have in hand are on the table. Holding the pair makes it a "set." (00:06:25)
Character mistake: Florence grabs the victim's phone with a tissue to avoid leaving prints...but then uses her other bare hand to go through her messages via touchscreen. In many other scenes she's just seen wearing latex gloves. (00:12:30)
Character mistake: The forensics report in its first screen displays the word "antybodies", when of course it is "antibodies" (00:25:15)
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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