Continuity mistake: When Walter tells the Horsemen to follow him, he turns to the left and begins to walk away. When he realises they aren't following him, he turns his head around to face them, while his body remains turned away from them. In the next shot, when he says "Follow me" again, he is facing them directly. Then in the shot after that, he turns away from them, with his head turned towards them. (00:35:28)
Audio problem: When Chase is hypnotising Merritt with the pizza box, just after Merritt lands on Chase's shoulder, Chase begins speaking into his ear. In the shot from behind Chase that focuses on Merritt, Chase is heard speaking to him, but his mouth is not moving. (00:32:15)
Continuity mistake: When Dylan is exposed as the fifth Horseman, Cowan grabs him with both of his hands against Dylan's arms and pushes him up against a wall, before proceeding to handcuff him. A few minutes later, when this same scene is shown on a news broadcast, Cowan is shown putting his left hand on Dylan's bag just as he is pushed against the wall, which wasn't shown the first time. (00:25:05 - 00:29:20)
Continuity mistake: When Chase tells the bodyguards to remove the Horsemen from the restaurant, he says, "I'm not gonna let you guys yuck my yum," and turns his head downwards to the left while shooing them. In the next shot, he is standing upright again and his head is facing them directly. (00:28:35)
Continuity mistake: When the Horsemen land in the Chinese restaurant, they land in baskets and Merritt is shown with his legs inside the basket once he lands. In the next shot, his legs are suddenly sticking out of the basket. (00:26:08)
Continuity mistake: Just after Cowan handcuffs Dylan, he pulls Dylan back so that he can face Natalie. When he does this, he places his hands on the side of Dylan's shoulders. The shot cuts to focus on Natalie, and Cowan doesn't move his hands, but when the shot cuts back, his hands are on top of Dylan's shoulders. (00:25:10)
Continuity mistake: When Lula is talking to the chef, in the shot of the chef saying "I don't know who Lisa is," he turns his head away from Lula to look down at the food. In the next shot, he is looking at Lula again. (00:19:10)
Continuity mistake: When the security guards escort the CCTV guard away, Jack can be seen in the background watching it all happen. He is shown leaning his head slightly to the right, but when the shot cuts to a closer angle of him, he is hunched much further to the right. (00:18:33)
Continuity mistake: When Lula ties herself out of the ropes that Daniel tied around her wrists, she removes the ropes around her left wrist first and then removes the ropes from her right wrist. She lowers her left hand so that it is next to her right hand (and so that she can pull the remaining rope off her hand), but when the shot cuts to Daniel, her left hand is much further away from her right hand. (00:11:45)
Continuity mistake: When Daniel realises Lula isn't inside the couch, he looks over to the table to see Lula sitting there. There is a paper takeaway bag on the table that has a fold along the side of the bag, and the fold appears to end near the top. The shot cuts to Daniel, but when the shot cuts back to Lula, the fold in the bag appears to end much further down the side of the bag. (00:11:15)
Continuity mistake: When Daniel puts a paper bag on his table after meeting Lula, in the shot of him placing the bag on the table, his right forearm is raised, but when the shot cuts, his right arm is lowered. (00:10:55)
Continuity mistake: When Natalie walks out of Dylan's office, Dylan is holding a folder in his right hand, which switches to his left hand when the shot cuts. (00:09:50)
Continuity mistake: When Dylan is showing the FBI director and Cowan the photos of the Horsemen, just as the FBI director asks what it all means, she is looking at Dylan, but in the next shot, she is suddenly looking at the photos. (00:08:50)
Audio problem: When Dylan begins explaining the plan to infiltrate OCTA to the Horsemen, there is a wide shot where he says "OCTA's hosting the launch of the next-gen cell phone" but his lips don't move at the start of the line. (00:15:40)
Audio problem: At the OCTA launch, when Daniel calls security for the CCTV guard, the security guard finds the Evans Mental Facility wristband on his wrist, then the CCTV guard says "Hold on a second" but his mouth doesn't move. (00:18:10)
Audio problem: Jack "hypnotises" Chase in the bar to make him apologise to Merritt and slaps Chase on the face to wake him back up again. Chase then says "Merritt", but his lips don't move. (00:49:00)
Audio problem: In the bar, when Chase is telling Merritt his ploy of distracting him while the other Horsemen screw over Walter isn't going to work, whenever the shot is behind Chase, Chase's mouth movements do not match the dialogue when he is speaking. (00:48:35)
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