Visible crew/equipment: While Danny and Baez are hiding in the hall, when Ramirez (parole officer) knocks on Lloyd 's door he gets the gun from under the seat cushion, then as Lloyd starts to walk to the door, the green T-mark is visible on the floor near the right side of the screen. (00:34:20)
Visible crew/equipment: After Eddie tells Jamie that she wanted Josh to swoon over her like Caroline seems to be doing with Jamie, when it cuts to Erin as she tells Danny that Child Services will likely release the boy to his parents, as Danny says, "Hold on," the green T-mark is visible on the floor. (00:22:30)
Visible crew/equipment: While Frank visits with the Cardinal to tell him about the time sensitive situation, when Frank asks about St. Mary's surveillance cameras as they both sit down, the small green T-mark is visible on the rug under the Cardinal's chair. (00:23:40)
Continuity mistake: As the couple with their two children are walking down the street, the daughter, Sophie, is holding latex helium balloons which are the transparent type, but after she and her mother are struck by the reckless drunk driver, when the balloons float away they are the opaque type. (00:04:25)
Visible crew/equipment: When Danny gets off the phone he tells Baez that a Port Authority cop has detained their guy, and at the start of the next shot facing Baez, the reflections of the moving boom pole/mic and the boom operator are visible on the glass, at the right side of the screen. (00:02:20)
Continuity mistake: In the first two shots of the family dinner Henry is holding his fork up in his left hand, but in the third shot from behind him (facing the family) his raised left hand is empty with his fork lying across the plate, then it's back up in his hand in the fourth shot. (00:21:10)
Continuity mistake: At the start of the episode, when Frank opens/closes the refrigerator door we see the door's layout, and the door bin cover is under the top shelf compartment. As he makes himself the sandwich Erin and Nicky walk in, and when Nicky opens the fridge door it's an entirely different interior style with the door bin cover at the top.
Continuity mistake: During the courtroom hostage scenes, when Raoul Delgado and Erin are on the phone with Danny there are some closeups of the gun Delgado is holding. After Delgado hangs up on Danny, when he slams the gun into Jack's temple and orders Erin to go with him, in these closeups the gun is noticeably different. (00:30:55)
Continuity mistake: After Danny shoots Delgado, he kneels down and holds Erin at her right side with his back facing the car (driver's door is open), but in the next shot Danny is kneeling at Erin's left side with his front now facing the car, as seen in the live feed Frank is watching on the monitor. The live feed is not backwards, note the open driver's door, etc. (00:34:35)
Continuity mistake: When Danny gets into gunfight with Rory Brennan at Whitey's facility, keep a good eye on Rory's gun. After Danny shoots him, the gun drops out of his hand onto the ground between his legs. When Danny goes down the staircase, the gun is back in Brennan's hand, so Danny uses his foot to bring the gun to the floor...for the 2nd time. (00:29:50 - 00:30:35)
Visible crew/equipment: After Jaime goes after Malcolm, who was released again from the hospital, it cuts to Danny and Kate parked in the car across the street from the church, and when Kate opens her door the reflections of the camera and crew members are visible on the window.
Character mistake: Frank implies that Joe is the oldest child, but he was born in 1977 (1x22), Erin in 1975 (6x07), and Danny 1973 (2x17). Erin also claims she wasn't born yet when the murder of Henry's friend took place in 1977 but she would have been about two years old.
Audio problem: While at the range, Jamie takes Frank's revolver to the line and fires it. The last 2 shots you can hear the casings hitting the ground, but not on the first 3 shots. The last 2 shots are from another camera angle. Revolvers don't eject the casings, so we shouldn't hear them landing.