Continuity mistake: After arriving at the Macau casino, Chase starts teasing Merritt and Merritt then gives Chase the finger by rubbing his eyes with his middle finger. Merritt then begins to lower his arms, but in the next shot, his arms are suddenly by his side. (00:33:10)
Continuity mistake: When the Horsemen first see Walter Mabry, he is shown flicking a card between hands. Just before the camera cuts to a closer shot of him, he is seen with his head facing the window, but when the camera cuts to the closer shot, he is suddenly looking at the card. (00:34:15)
Continuity mistake: When Walter is explaining his plan, after telling Merritt they may not be having fun but he is, Walter begins to walk away from the Horsemen, but in the next shot, is suddenly standing several meters from them. (00:36:30)
Continuity mistake: When Walter is explaining his relationship with Owen to the Horsemen, Merritt's position changes whenever the shot is on him. He is either sitting on the couch with his arm on the arm rest and leaning forward, sitting with his arm on the arm rest and has his back against the couch or sitting with his back against the couch with his hand in his lap. (00:37:45)
Continuity mistake: When Walter is requesting the Horsemen to steal the computer chip, Merritt is seen with his bow tie untied. Whilst Walter is explaining that the chip is being previewed tomorrow, Merritt has the left side of the bow tie mostly covered up by his jacket, with some of the bow tie sticking out from it. After Walter says they just need to inspect and steal it, the entirety of the left side of the bow tie is now entirely obscured by the jacket. Walter then says back home they are wanted criminals and suddenly, part of the left hand side bow tie is suddenly sticking out from the jacket again. (00:38:45)
Continuity mistake: The analogue clock on the wall in Thaddeus' prison cell goes back in time by 5 minutes from 7:57 to 7:52. (00:42:10)
Continuity mistake: At the magic shop, when Daniel is reading out the list to Li, Daniel first has his right hand on the paper, but in the next shot, he is holding the paper with his left hand. (00:44:20)
Continuity mistake: When Merritt and Chase leave the magic shop to go for a drink, Jack has his hand placed on top of a reverse rain machine. The shot then cuts to a closer angle of the reverse rain machine where his hand is no longer on top of it. (00:45:20)
Continuity mistake: When Dylan and Thaddeus are leaving the prison and are about to get into the car, Thaddeus tells Dylan his sources are telling him the Horsemen are in Macau. When he finishes the line, he is looking down at the car, but in the next shot, Thaddeus is suddenly looking at Dylan. (00:46:30)
Continuity mistake: When Lula is showing Jack the belt that she pick-pocketed, she is holding the belt with the buckle dangling at the bottom, but in the next shot, the belt is suddenly being held by the buckle. (00:47:30)
Continuity mistake: While Chase and Merritt are drinking in the bar, in one shot Chase is wearing sunglasses, in the next shot the sunglasses have disappeared. (00:48:10)
Continuity mistake: When Merritt and Chase are talking at the bar, they are sitting side by side facing the bar, but when the shot changes, they are suddenly turned 90° to face each other. (00:48:30)
Continuity mistake: When the Horsemen arrive at the Macau Science Centre, Allen Scott-Frank tries talking with the South African gangster and is ignored. The gangster rolls up the window and the shot cuts to the Horsemen. Daniel is shown looking towards Merritt, but when Allen says "or not" in the next shot, Daniel is suddenly looking at Allen. (00:54:05)
Continuity mistake: When Dylan meets up with Daniel in Macau, Daniel tells him he cannot be seen with him. Daniel's hands are by his side, but in the next shot, he is suddenly has one hand on his ear. (01:08:55)
Continuity mistake: Daniel is about to give the chip to Walter and Dylan rushes in to stop him. When Daniel first takes out the chip, he has it in his right hand, but when Dylan pushes him up against the wall, the chip is suddenly in his left hand. (01:11:15)
Continuity mistake: When Dylan is on the boat with Walter and Tressler, there is a bloody cut on his bottom lip, but when he is rescued by the Horsemen minutes later, the bloody cut has suddenly vanished. The cut reappears when Dylan and the Horsemen are talking in the next scene. (01:15:05 - 01:22:15)
Continuity mistake: When Walter finds out about the Horsemen's plan to expose him on New Years Eve, Walter tells a bodyguard to get his father. The bodyguard begins to walk past Walter, but in the next shot, the bodyguard is suddenly at the other end of the room. (01:27:05)
Continuity mistake: When Walter and Tressler arrive in London, Walter gets into a car and begins to close the door. Chase is behind the car walking up to it, but when the car drives off in the next shot, he is suddenly standing beside the car, standing completely still. (01:28:45)
Continuity mistake: When Jack is performing in London, there is a woman directly in front of him, recording him on her phone. In one shot, she has her left hand across the left side of the phone and is holding it, but in the next shot, she is only holding the left side with only two fingers. (01:29:20)
Continuity mistake: After thinking they have thrown the Horsemen off the plane, Tressler peels off the label to the bottle that he and Walter are drinking from and finds the tarot card on it. He is holding the bottle by the bottom when he peels the label, but when he hands the bottle to Walter in the next shot, he is holding the bottle by the top. (01:46:40)
Answer: The only ones who knew the chip was fake were the Horsemen, no one else did. Walter did not know the chip was fake. The plan was to convince Walter that the chip was real so that they could lure him out of hiding with Walter attempting to kidnap and later kill them, and expose Walter to the public in doing so. They told the crowd after exposing Walter about the chip, because while it was a fake, they still had plans with it assuming it was real. If by "alert the FBI", you were referring to when Dylan gave the FBI director the evidence on Walter and Tressler, that was not the chip he gave to her, that was a hard drive containing all of Walter and Tressler's past dealings.
Casual Person