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Character error
In the flashbacks, Jack Kelso is seen addressing his fellow Marines as "soldiers," which is something a US Marine would never ever do.
According to the unit number, the same fire truck can be seen at every fire scene, including concurrent ones.
It is possible to visit one location at one time, and then some time later visit another location at the same time.
In the case "The Golden Butterfly", The player as Phelps chooses to charge either Eli Rooney or Hugo Moller with the murder of Diedre Moller, even if Eli Rooney is the one charged further references to the case indicate Hugo Moller was charged instead even though in that situation he was questioned and let go.
The U.S. Navy sailor in The White Shoe Slaying is said to have the rank of "Able Seaman." This is a rank in Royal Australian Navy (the game was developed in Australia). Based on his sleeve insignia, his rate is actually a Boatswain's Mate 3rd Class.
When Detective Phelps telephones someone and then telephones someone else, he does not hang the telephone up or press the lever that closes the circuit in between calls, which he would need to do in order to get back to the Operator.
In a flashback, some Marines are shown fighting while wearing their packs. No soldier of any kind wears his pack into battle, as packs are heavy and awkward to fight while wearing.
No matter which car he is in, Detective Phelps is always in Car 11K. Police call signs are assigned by car, not according to the individual.
A construction invoice uses tonnes, which are metric tons. The United States of America uses Imperial tons.
At Bishop's apartment building, Detective Phelps reaches to the right of the elevator to hit the call button. The call button is located to the left of the door.
There are some larger intersections not equipped with traffic lights (especially around Hollywood) where NPCs drive like there were traffic lights, i.e. traffic from opposite sides of the intersection crossing simultaneously, rather than complying with standard yielding rules (right of way).
Many storefronts display a 50-star American flag. The 49th and 50th states would not be admitted until 1959.
The game is set in 1947, yet there are movie theaters showing The Lady from Shanghai (1947), which didn't premiere in the US until 1948.
The game is set in 1947, yet there are several vehicles in the game that are '48 or '49 models.
The animation for characters entering cars shows that they are putting on 3-point seat belts. Lap style seat belts were not even offered as options in cars until 1949 and 3-point seat belts were patented in 1955; the game takes place in 1947.
In the Ad Vice case "The Set Up", Candy Edwards has a movie ticket stub for The Egyptian Theater showing of the movie "The Set Up". The date on the stub is March 10 1947, but in actuality the movie was not released in theaters until two years later (1949). Coincidentally, the case is similar in nature to the movie.
Whittier Boulevard is misspelled on the game map as "Whittlier" Boulevard.
There is a payphone within the police station that is used for official business. If it is used for official business, policemen should not need to pay to use it.
In the case "The Naked City", Phelps presents Willy's last name to Arnett in an interview despite not knowing it beforehand. The P.O.I to this point was only "Willy".
In the flashbacks, Jack Kelso is seen addressing his fellow Marines as "soldiers," which is something a US Marine would never ever do.
Despite being set in Los Angeles, the game had an Australian developer, Team Bondi. There are occasional uses of non-American phrases, i.e lift instead of elevator, fire brigade instead of fire department, etc.
In several instances throughout the game, Cole and his partner will search the premises against the owner's wishes. He will ask if they have a warrant and they brush it off. In real life, this would render any evidence they find inadmissible as a search without a warrant violates the Fourth Amendment.
Elsa Lichtmann uses the German phrase "Auf Wiedersehen" (goodbye) at the end of her telephone conversation with the insurance investigator. A native German speaker would intuitively use the variant "Auf Wiederhören" in a telephone conversation.
When Detective Phelps calls the Operator and asks for Dispatch, he does not specify which dispatch he refers to.