Continuity mistake: In the previous hour, Pattie has long straight hair down to her shoulders. We see this all the way through, even at the very end. Yet at the start of episode 22, when she is now at the party a mere 10 minutes later, her hair is very much shorter. There is no way she would be able to get ready for the party in that time, let alone have her hair cut.
Continuity mistake: The show claims to be in real time, and although those viewers who aren't too eagle-eyed will argue that it is, there is undisputed evidence in this episode that it isn't accurate. After the final ad break, the clock reads 03:52. At least two minutes later, when we see Teri and "Alan York" turn a corner in their car, the clock is displayed at the bottom of the screen, and it is still 03:52. The same sort of thing happens earlier in the episode, when there is a good ten minutes or so between when the clock says 03:26 and when it says 03:30.
Continuity mistake: Mike Novick and Senator Palmer are outside the car at Dr Ferragamo's office building when his office explodes. As they get back in the car, you can see over the shoulder of whichever gets into the rear, passenger-side. There is no one in the driver's seat, but when Palmer says, "Let's go," the car moves off immediately. (00:30:25)
Continuity mistake: When Agent Walker enters the building where Matobo is being held, Chloe tells her on com the stairway is to Agent Walker's left, she then immediately goes to the door to her right to enter the stairwell to let Jack Tony and Bill in from the roof.
Audio problem: When Jack is getting suited up, the new bloke arrives and we hear him put his case down on the glass desk. Camera changes and we see him put the case down on the desk a second time. (00:12:50)