Oldboy (2013)

Continuity mistake: Joe is looking through his yearbook while Marie chats with the old headmistress. He finds the page with Adrian's photo. At first, the name under the photo is Adrian Pryce. In the closeup shot, it now reads Adrian Doyle Pryce. (01:12:20)

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Continuity mistake: During the ending, when Joe is seen burning one of the letters he had written Mia, when the camera cuts from a medium shot to the closeup of the letter burning, the handwriting on the envelope is slightly different, and the size/position of the fire has also changed.

Continuity mistake: After the "Single Shot" fight sequence, watch closely as the camera cuts and Joe is stabbed in the back. The background (and the beaten-up henchmen strewn about on the floor) completely changes between shots. A section of the fight was cut out by the studio for pacing reasons, causing the mistake.

Trivia: During Joe's hunt for the dumpling restaurant, he pauses to look at a squid in a fish tank, a nod to the original movie. (00:40:00)

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Trivia: The passing reference to "The Count of Monte Cristo" made right before Joe kills a guard at the "prison" is a small nod to the original Korean version of the film. "The Count of Monte Cristo" is referenced and paid homage to several times during the original film.

Trivia: At the beginning of the film, we see Joe buying a "rubber ducky" for his daughter from a female street vendor. The street vendor is wearing a set of "Angel Wings" on her back. This is a reference to the original Korean film, in which the lead character had bought his daughter a similar set of "Angel Wings" to wear.

Chaney: I swear, I don't know nothin'! I swear before God and eight motherfuckin' white people.

Chaney: Shit, you might wanna think about what you're doing here.
Joe Doucett: I've been thinking about it for the last 20 years.

Adrian: Heaven make me free of it. The rest is silence.