Visible crew/equipment: Right after the opening credits, Torres rolls up on scene, and just as the camera passes behind his vehicle, the reflection of the camera and camera operator are visible on the back window. This does not refer to the news people following Torres. (00:03:05)
Visible crew/equipment: While J.C. and Eddie begin interrogating Leroy, when J.C. mentions Marcus and says, "He caught one in the back," an actor's T-mark is taped to the floor behind Leroy's chair. (00:10:20)
Visible crew/equipment: After J.C. agrees to talk to Carol Thomas for Andre, it cuts to Santucci in the precinct. When Eddie says, "Now you can go," the actor's chalk mark (toe box) becomes visible on the floor, as Santucci turns around to face Vinny. (00:15:50)
Visible crew/equipment: When Nina joins Lt. Cooper, they both head upstairs for lunch and fresh coffee. Then, while the camera begins moving toward the front desk (before we see Gina), the reflection of the dolly, camera, camera operator, and boom pole are visible on the glass partition. (00:17:55)
Continuity mistake: In Season 2, Episode 19 ("Checkmate"): Detectives Torres and Moreno respond to a radio call reporting gunfire at 300 East 85th Street, which they acknowledge. We then see the suspect exit the building and escape in a car, and the detectives run unto the same building a few seconds later. The building number however is 237, not 300. (00:33:35)
Visible crew/equipment: After Gina is shot, just as that scene begins to fade to Lt. Cooper on the staircase, at the bottom of the screen we can see the orange tape mark (toe box) on the floor, right beside the lowest step. (00:37:05)
