Continuity mistake: When Charlie Epps is writing a quadrillion on the whiteboard, the writing alternates between shots. Most noticably when he first writes it down, there is a significant downward tendency of the 000 groups. In the next shot, they are pretty much horizontal. Also the shapes of the commas alter.
Continuity mistake: Around the middle of the episode, Charlie Eppes and Mildred French are discussing in front of a board. She completes an equation and he adds a minus. In the next close shots, the minus disappears and reappears with angle changes. After three or four changes, a circle appears around the minus.
Continuity mistake: "The Art of Reckoning": At the end when Lucy and Pony are at the table, she extends her left hand and he lays his head on her hand. In the next shot, he is holding her right hand with his head up and then in the next shot he is back to lying on her left hand.
Continuity mistake: While the mother is driving her children to school in a minivan, both the driver's seat and the front passenger seat change from having the headrest/whiplash protector being attached to the seats (non-removable), to having the adjustable kind that have been removed.
Continuity mistake: While Charlie is talking to Dr. York on the phone, the camera is at a wide shot, notice that Larry's name tag is not behind Amita on the wall. When the camera cuts to single shot of Amita, Larry's name tag appears on the wall. Then, the camera cuts to a wide shot again, and the name tag disappears. (00:38:25)
Continuity mistake: In 'The Janus List' (324), when David gets mad at Colby for being a spy, he says "You're not a spy, you're a damn traitor". But, in 'Trust Metric' (401), when Don is reviewing the tapes of Colby's interrogation, David says "You're not a damn spy, you're a traitor".
Continuity mistake: When Charlie is in his office talking to Larry, while going over the potential killers and victims, he writes the word "Killers" on the board and circles it. Then, when Charlie notices that Larry has left and says "gone", the writing is different. The 'k' is wider, and most noticeably, the left side of the circle is gone, and the loop in his 's' disappears. Once Charlie goes back to working, the word changes back to how it was originally written. (00:38:20)
Continuity mistake: When the FBI goes to arrest Tabakien, his men try to stop them and Don slams one of the guys' heads into a plate. The plate breaks into several pieces spreading the food all over. After you see the other men being stopped, you see a shot of the first guy again. And you can see that the plate is mostly intact and the food is not spread around as much.
Continuity mistake: When Charlie is comparing a computer wipe to a data scrubber, he first crosses out the equation"E=MC2" with a magic marker, beginning mostly with uniform, vertical lines, and then lightly scribbled. However, in a later shot in the sequence, the cross-out is different, being mostly scribbled, with few vertical lines.
Continuity mistake: When Charlie explains that his map was generated by an equation he writes the equation in abbreviated form on the whiteboard, and also when he writes the equation for the probability of winning the lottery, in following shots the handwriting changes and some of it vanishes and reappears.
Continuity mistake: While Don's at the parking garage with Rachel Abbott's car he realises that the killer had been watching Karen Silber's house, and when they rush off to her house there are white security bars on the windows and front door in the long shot and also later in the news footage, but when they're at her house none of those bars exist and the shrubbery also differs.
Continuity mistake: When Bell is in the car with the female assassin, she pulls out a gun and points it at him. The camera then goes to an outside shot, where you can see the car's side window is already splattered with blood, before we hear the shot and the window shatters.
Continuity mistake: When Amita talks to Charlie that she isn't quitting the running of curriculum and he's writing something on the board- he is holding a laptop entering something in it, than camera shows Amita and when it comes back to Charlie- there is nothing on the laptop screen (only black screen). (00:37:10)