Character mistake: At the police station, the detective calls, "George Swinton," but the name is Stewart, not George.
Character mistake: Jo says Laurie is a "captive like Smee in 'Nicholas Nickleby.'" There is no such character in "Nicholas Nickleby." The character Jo is referring to is named Smike.
Character mistake: In the courtroom scene set in the 1870s, Morgan Earp responds to a defendant with "Nice and easy my ass." While "ass" was used as slang in the 19th century, the dismissive phrase "my ass" as a sarcastic retort isn't documented until much later, making it sound more like 20th-century speech than something cowboys in a frontier courtroom would say, making this an anachronistic turn of phrase. (01:45:30)
Character mistake: When Frank says to "V" that his mother died before he was born, "V" replies that she doesn't think that's possible. She is wrong. Although it may be uncommon, some babies ARE successfully born even after the death of its mother (usually with an emergency procedure).