Bleichert draws down on Bobby Dewitt, cocking his revolver for emphasis. In the following shots, however, his thumb is still on the uncocked hammer, as if he has yet to cock it.
When Bucky and Madeleine are talking at Bucky's car, the bonnet is glittering with raindrops. A few seconds later, when they continue their conversation inside the car, the bonnet is dry.
When Bucky is shot at, the bullet puts a hole through a windshield of the car. In the next shot, the bullet hole is gone.
When Kay pours champagne at the dinner table, she fills Lee's glass twice.
When Ramona Linscott thrusts her utensils into her food, a small potato rolls onto the table and stops beside a glass. In later shots, the food has changed position and the wayward potato has disappeared.
Characters who knew Elizabeth Short refer to her as 'Betty' constantly. Though Elizabeth Short was known during her childhood as Betty in her hometown, she used the name 'Beth' not Betty throughout her stay in Los Angeles.
Cars are seen with 1945 an 1946 California front license plates - black and white with a white strip on top. In those years (and no other year), California only issued rear license plates due to wartime metal shortages.
The Ice & Fire boxing match is held on Friday November 5th 1946, however in 1946 November 5th was on Tuesday.
After the shooting at Nash's, when Lee is smoking a cigarette, the usage of a split field lens is visible.
The newspaper that the stuffed Balto has in his mouth is from 1926, that is more than 20 years old, but is has not turned yellowish.
When carrying a box out of Bleichert's father's home, you can see a UPC barcode on the bottom of the box. Barcodes weren't commercially used until 1966.
When Bucky Bleichert enters Sheryl Saddon's bedroom to get the suitcase, there is a postcard-sized picture of Bettie Page on the wall. Bettie Page did not start modeling until 1950.
During the scene in the theater screening The Man Who Laughs (1928), we see the beam from the projection room. It is shining out of a single window. In the '40s, theaters used two projectors and changed reels (alternating projectors) every 20 minutes or so, unlike modern theaters that use only one projector per screen. The back wall should have shown two projector ports, two viewing ports for the projectionist and a large port for the spotlight.
In a voice-over describing attacks, one detective uses the phrase "senior citizens." That term was not coined until 1955 or so, and even then was not widely used until after 1970.
Handcuffs never had belt attached cases in the 1940's; they simply hung on the officer's belt. The cases used to carry them were introduced in 1960, and they were introduced in California before being used by police officers nationwide.
In the diner scene the cash register shows a purchase of 4d which was the British symbol for pence, not something you're likely to see in LA.
Everyone, including characters who have lived in the city for a long time, pronounces Los Angeles with a soft g, the way it is pronounced in modern times. In the early and mid 20th century, locals preferred the hard g (closer to the original Spanish name) so it sounded like Los Angle Iss. Although the original pronunciation was losing out by the 1940s (due to an immigration of Easterners such as Elizabeth Short who were unfamiliar with the name), it was still in use and can even be heard in a few movies and radio programs made as late as the 1950s.
'Elizabeth Short (I)' (qc) had no middle name in real life, but she is referred to as Elizabeth Ann Short during the autopsy.