- [police contact David's probation officer]
- Himself - Former Probation Officer: I was very apprehensive. It's never good for a guy with his kind of record to be the last person to see a young woman who disappears.
- Himself - Former Probation Officer: He was sent to a-a youth facility for, uh, sex offenses as a child; so, he had a long history of aberrant behavior.
- [aware that the gunman will kill her and her boyfriend despite assurances, Ellen Hansen steps in-between and confronts her soon-to-be killer]
- Himself - Santa Cruz Police Detective: I've always had great admiration for Ellen because of... the incredible courage. Probably one of the bravest young women I think I've... ever become aware of.
- Himself - Former Probation Officer: The David that went out hunting drove a red car, wore different clothes, and didn't stutter, and this David was the hunter, he hunted people; and, the David that everyone saw - his parents, his kids, his brothers and sisters... me - was this bumbling guy.
- Himself - Former San Jose Police Dept Detective: If you wanna cut it down to its basic form, David Carpenter was a serial rapist. He had in insatiable sex drive that he could no longer control.
- [a police sketch artist produces a picture]
- Narrator: Little did they know that the man in the picture would unearth a two-year-long mystery surrounding a trail of bodies found along the San Francisco Bay.
- [last lines]
- Himself - Santa Cruz Police Detective: He's one of those folks that doesn't have that moral compass, and even though he's gotta be - what, eighty years old now? - I would say if you put him on the street today, within a week there'd be a sexually assaulted dead woman out here.
- Narrator: [during a police interview] As they discussed Carpenter's childhood, there was an alarming change in his demeanor.
- Himself - Former San Jose Police Dept Detective: He said that "I was forced to take ballet lessons, and I really resented that," and I-I interrupted him for a second when he made that comment. I said, "You know, David, um, when I was nine years old I took ballet lessons, too," and he cocked his head a little bit, and he stood up. He rose above us and he went through some basic ballet positions and started doing somewhat of a dance.
- Himself - Former Probation Officer: And telling us the number of the positions - one, two, three. He didn't do them well, but he remembered them.
- Himself - Former San Jose Police Dept Detective: And as he stood up above us, talking, he didn't stutter one time. Everything that he said was in a natural, uh, cadence of speech. There was... the stutter was gone. The contortion of face was all gone. He was actually in a happy, uh, comfortable space
- Himself - Former Probation Officer: This is one of the things that just completely and totally amazed us.
- Himself - Former Detective, San Jose Police Dept: It was dramatic. It was absolutely dramatic.
- Himself - Prosecuting Attorney: The only way I can describe the crime scene is there was just some... bizarre element, whether or not that's ritualistic or not, I-I can't say, but it definitely left you with a very bizarre, strange feeling.
- Himself - Forensic Psychologist: Carpenter abused animals, and he was a bed-wetter. He was enuretic. It's a sign of a, of a child who is really really struggling under a lot of stress, under a lot of pressure, and it could develop in a number of different directions.
- Herself - Forensic Psychologist: And he developed a severe stutter at a young age, which was humiliating for him and frustrating for him; and, stuttering can be caused by stress, feelings of inadequacy, an inability to... to really have any sense of oneself, not really knowing where to turn, feeling unsafe...
- Himself - Former Detective, San Jose Police Dept: The two sides of David Carpenter: one side that people saw regularly was an insecure, innocuous man who was, uh, to be disregarded, and the other David Carpenter was the... the vengeful predator behind the gun or behind the knife, and what is in control was a-a mean, vicious, sexual psychopathic killer.
- Narrator: And it was this ability to compartmentalize his life that allowed Carpenter to pass under the radar for so long.
- Himself - Former Marin County Sheriff: [the sudden change in park visitors] With the third murder, uh, the mountain became almost devoid of people.
- Himself - Former Marin County Sheriff: His mistreatment as a child must have had severe impact on his psychological development as an adult and built up the kinds of things that created the kind of monstrous killer that Carpenter was.
- Himself - Former Probation Officer: [on David's detainment for questioning] Bumbling, stuttering, uhhh... tried to charm everybody; but, you know, homicide detectives aren't easily charmed.
- Himself - Forensic Psychologist: Individuals will pose the body in a variety of different ways, which is an outgrowth of their fantasies; and, it's gonna be very different for each individual, because individuals' sexual fantasies are very very different and very very unique. Now, there are commonalities. They'll usually pose the person in some type of degrading position.
- Himself - Former Probation Officer: I think he had some problems, and his mother's manner of dealing with them probably wasn't as constructive as it should have been.