Several shots in this episode are re-used from the Season 2 episode "Requiem for A Cop," including the closeup planting of the car bomb, Hooker & Romano entering the car, exterior shot of them driving away, close-up the detonator countdown, and the squad car explosion.
At 3:55 the patrol car entering the precinct grounds is stock footage from many previous episodes.
At about 9 minutes the portrait painter invites Hooker to her home that evening. He agrees but doesn't ask for her address.