Factual error: The detective constable is addressed as "Sir" by uniformed constables. They actually hold the same rank. Detectives do not outrank uniformed officers in Britain.
Factual error: In the transition shot showing Hobart Building in San Fransisco, items not belonging to the scene are visible and have not been edited out. These items include; modern phone numbers, web addresses for several companies and educational institutions, satellite dishes and American flags. (00:24:10)
The Frankenstein Murders - S1-E5
Factual error: When Mary looks at the newspaper, it says "Tuesday, March 31, 1827." But that was a Saturday.
Revolution 1 - S2-E4
Factual error: Hodiak is having breakfast at a dinner. There is a sign for breakfast with a price of $4.95. In 1967 the price for breakfast would have been around $1.25 or less. Minimum wage was $1.60 an hour and the price of a big Mac, for example, was $0.50 and fries $0.10. So a $4.95 price for breakfast is just ridiculous.
Episode #1.1 - S1-E1
Factual error: The series is set in 1933, as the initial captions show. Yet the locomotive pulling the Orient Express is a JNR Class C58: the C58 series was built starting from 1938 (C58 239 used here is from 1940).
Episode #1.1 - S1-E1
Factual error: Unlike Christie's novels, there is no explicit statement of the date - the original novel started on the August 8th, which is compatible with what is shown here; Vera is interviewed and the letters are all posted on August 2nd 1939, which would fit. However, there's a problem when Vera changes seats en route to Soldier's island. A passenger is reading the Daily Express, and the headline is from August 29th of that year. Too much time elapsed and it's the end of the Summer while the chat between Emily and Vera implies otherwise; it's also Tuesday but the doctor comments "It's been a long week" when he apologizes at dinner - the weekend feels a more appropriate time for a party and gathering as shown. (00:06:15)
Factual error: As Ren enters Renautas and meets Emily, the word "Welcome" keeps scrolling in various languages on the screens in the background. Although hardly seen, the Hebrew is wrong, as it is reversed (text from left-to-right, as opposed to right-to-left).
Does One Door Close and Another One Open? - S8-E22
Factual error: Will Halstead arrives at Seattle Tacoma Airport, and when he steps outside of the terminal, the Space Needle is in the background. Unfortunately, the Space Needle can't be seen from outside of the terminal, since the airport is not in Seattle. (00:58:39)