'Devil In Disguise: The Hillside Strangler' Producer Reveals What Makes This Case Stand Out

When the person behind a string of killings is caught, the mystery has been solved, right? Well, not always. As 
"The Hillside Stranglings," a series of murders that occurred in 1970s Los Angeles, showed, sometimes capturing the culprit leads to more questions, rumors, and theories.

Kenneth Bianchi was eventually convicted in the murders of 10 girls and young women in L.A., along with his adoptive cousin Angelo Buono. (Bianchi was also convicted of two other murders in Washington state.) The two men impersonated police officers to lure in their victims before strangling them and dumping their bodies in the hills around the city. But as the new Peacock docuseries "Devil In Disguise: The Hillside Strangler," streaming now, demonstrates, there is still a lot to unpack about the case.

"At the end [of working on this docuseries], a number of us really still had questions about the case, and its narrative, what's truth and what's fiction. I think that will be an interesting thing for viewers to experience as well. Two people can be sitting on the same couch watching the same show and at the end you may disagree with one another about the outcome or what you really think happened," Alexa Danner, an executive producer on "Devil In Disguise: The Hillside Strangler," recently told Oxygen digital correspondent Stephanie Gomulka.

The reason Kenneth Bianchi became the focus of the docuseries had to do with his ability to trick people and lead a double life for so long, Danner explained.

"This case is really fascinating because it features someone who is a true devil in disguise: someone who operated as a normal person on the outside, had jobs, had girlfriends, was a charming, polite, fresh-faced young man and the people in his life didn't know he was living a double life. He was a consummate con man, a master manipulator like a lot of serial killers, who fooled the people in his orbit while doing really horrible things at night," she said.

After Bianchi was caught, he also pinned the blame on his adoptive cousin Angelo Buono. Buono was largely convicted on the basis of Bianchi's testimony, which Danner speculates will leave viewers wondering.

"The relationship between these two people is a little bit of a mystery. Different people have different opinions on who was the mastermind and who was driving who to do what and if you rewind to Ken Bianchi initially implicating Angelo Buono and look at it from the perspective Ken Bianchi was a known liar, a consummate manipulator, he told truths and lies, fact and fiction interchangeably ... it's one of the features of the documentary that I think is most compelling. Viewers are going to get to spend a lot of time with Ken Bianchi and determine for themselves what they think: was he operating alone, or totally in tandem with Angelo, was it somewhere in between?" she explained to Gomulka.

For more of Danner's interview with Gomulka, watch the interview above. Tune into Peacock to watch "Devil In Disguise: The Hillside Strangler," streaming now.