Plot hole: During the film's climax, Anais is killing Marybeth Medina when, through the darkness of the dimly lit room, she sees a photo on the far wall. As if in a trance, she advances on the photo. As she approaches, to the tune of suspenseful music, her memories return. She remembers her husband and his murderer. One tiny photo made her whole again... Except, Anais has already seen the photo at the beginning of the movie (at 00:03:55), in a well-lit room, up close. (01:33:55 - 01:36:34)
Plot hole: How did Red Guardian drive from Washington, DC to Utah, a distance of more than 2,000 miles, in a limo that can't seem to go more than about 54 mph?
Plot hole: Emily learned Italian during her youth in Rome, thanks to her time there and Dante Versano's tutoring. Considering that a good portion of the movie we don't deal with the real Emily but with another person impersonating her, it's unclear how this imposter could have learned the language and everything else about the family, given she certainly didn't have years to prepare and Emily's life as "Olivia" was not publicly known.
Plot hole: At the start of the film, the club are discussing Angela Hughes' murder, and they say they need another member of the club who has a medical background to answer some of their questions on the case. That's why they eventually ask Joyce those questions. But the club actually already has a retired doctor among their number. Ibrahim mentions he's a retired psychiatrist. Having a specialism in psychiatry doesn't change the fact he's a doctor, so he has the necessary medical background.
Plot hole: The Horsemen entered France without evading the customs, even though they were wanted for theft within another EU state, Belgium. Perhaps there is a good explanation for this, but how did they leave France after they clashed with the French police? If they have a means of getting in or out of France stealthily, how did they get noticed the first time?