. >> he struck again on april 17th at 3:00 in the morning, killing 18-year-old valentina suriani and-old alexander esau as they sat in a parked car in the baychester section of the bronx. >> we get the shooting back in the bronx, a girl named valentina suriani. but at that scene where that shooting occurred left a note addressed to my supervisor, and he called himself the son of sam. >> he talks about being possessed by a man he refers to as sam and the man he refers to to as his father, and he says his father requires blood. >> this got people's attention. i think it was just the sheer randomness of it. the fact you could be doing something as simple as sitting in a car talking to a friend, and someone would come up behind you and open fire. it was pretty terrifying. it was frightening. >> i was in charge of the nighttime operation. there was part of the task force that wanted to shoot him on sight. that was our job, take him out on the street. we just flooded the streets of new york. >> there's people dying, and we're trying to stop it, okay? it's everybody. it's not you. it's ever