Continuity mistake: Just after the Horsemen make Tressler broke, Arthur shouts "Did you do this?" Merritt, Jack and Henley separately talk to him after he says this. At the start of Henley's line, her arms are by her side. But in an instant close-up of Henley, her hands are suddenly raised. (01:02:40)
Continuity mistake: When Thaddeus goes to the Horsemen's room, Daniel begins to do a card trick on him. The other Horsemen go to stand up next to him. As this happens, Henley holds a rabbit with the rabbit held straight along her arms, then the rabbit's head is held higher than the rest of its body, then back to being held straight along her arms. Extended version. (00:51:30)
Continuity mistake: When Thaddeus is filming Magic Unmasked, directly behind him is a stand of magic items. When the crew leaves to let Thaddeus and Tressler talk, behind Thaddeus is now a completely different collection. (00:47:35 - 00:48:10)
Continuity mistake: When Alma first talks about Lionel Shrike's card trick, as she says "Then he goes to a tree that's been there 20 years", she is seen quickly lowering her head. Camera cuts and her head goes back to being raised. (00:45:30)
Continuity mistake: Dylan says to Alma on the plane "Some of those guys seriously need to get a life." Alma is looking down as he says this, but looking several degrees towards Dylan when the shot cuts. (00:41:30)
Continuity mistake: On the plane ride to New Orleans, Dylan tells Alma the Horsemen were a bunch of street magicians a year previously. As the shot ends, Alma has her head turned 90 degrees facing Dylan. Yet in the side angle, her head begins to turn that position. (00:41:10)
Continuity mistake: In the scene where Thaddeus explains to Dylan and Alma the Horsemen's first trick, he asks his assistant to get the teleportation helmet for Dylan. As Thaddeus' assistant reaches down for the helmet, Dylan is looking at Thaddeus, not smiling. In the next shot, Dylan is suddenly looking at Thaddeus' assistant with his head turned 90 degrees, now smiling. (00:35:30)
Continuity mistake: When Merritt begins his first magic trick, he puts a woman in "sleep" and places her head on his shoulder. In the first shot, her head is turned 90 degrees to the left. But in the next shot from a distance, her head is on his shoulder but isn't turned an inch. Her head goes to being turned 90 degrees once again in the next shot. Then back to not being turned when he lets go of her. (00:02:10)
Continuity mistake: When Henley walks Arthur Tressler onto the stage, she says "Now Art, did you fill out your envelope?" During this shot, there is light visible on the back of her jacket. But in a closer shot of the two, the light on the back of her jacket is no longer there. (00:59:50)
Continuity mistake: When Merritt begins asking Dina her account balance in the New Orleans show, as he finishes saying "4", he begins to lower his left arm. But by the next shot, his arm is back to being raised again. (00:58:35)
Continuity mistake: When Daniel and Henley make the rabbit re-appear during New Orleans show, Henley reaches into the box to get the rabbit. In the next shot, Henley's arms along with the rabbit are now out of the box. (00:55:35)
Continuity mistake: In the scene where Thaddeus goes into the Horsemen's room to wish them good luck at the New Orleans show, Jack is seen moving from one side of the couch to the other when Merritt says "Do you mind if I do a quick read on you?" Two shots after this, he is seen moving to the other side of the couch a second time. Extended version. (00:50:55)
Continuity mistake: As Alma shows Dylan the Lionel Shrike book, the book is raised to the top of her neck in this shot, but suddenly lowered several inches in the next shot. (00:45:25)
Continuity mistake: The shot before Alma goes to show Dylan the book on Lionel Shrike, she turned 90 degrees away from him. When she shows him the book in the next shot, she is suddenly turned to face him without any time to do so. (00:45:20)
Continuity mistake: Daniel finds his card. In a close-up of the card, he has his 4th finger placed on the side of the card, his thumb placed on the bottom of the card and the other three fingers hanging freely. Yet in a reverse angle of the card where the camera is in front of Daniel, he has all five fingers placed on the left side of the card. (00:08:15)
Continuity mistake: (Extended Version) After Dylan Rhodes has been tackled by the 12 hypnotized audience members and the Four Horsemen are ascending above the stage, a guy in a grey suit and Alma Dray can be seen standing next to the audience members on the stage, with the guy pulling one of them off Rhodes. A wide shot is then shown and no one is standing beside the pile (Dray is visible, but is almost off the stage). (01:03:30)
Continuity mistake: After Fuller states to Dylan that the Horsemen have tracking bracelets, Dylan is on the balcony looking at a crowd. He is then joined by Alma and he turns his head to her. In the following shot from behind the two, Dylan is now suddenly looking at the crowd. (00:46:10)
Continuity mistake: In New Orleans, Alma shows Dylan a book on Lionel Shrike. When the camera is front of her, she is holding the book with her hand at the top. In the reverse angle, she's not. (00:45:20)
Continuity mistake: At the Las Vegas show, Daniel says to the French banker "If you could sign your name. In English if possible." The next shot shows Henley walking around the stage in the center. But by the next shot she's suddenly standing at the edge of the stage. (00:19:35)
Continuity mistake: After Tressler's bank account cheque lowers $280k, Henley says "We have a confession to make." In this shot, Jack is in the background almost in darkness, then in the next shot, as Jack says "We lied about something", Jack is suddenly covered in stage light. (01:01:35)
Answer: The mirror was inserted at an angle, so that the reflection was the ceiling and not what was in front of them. It's the same principle for how periscopes work.
Bishop73