My hometown is famous for being the serial killer capital of the world for a prolonged period, about three decades I believe. I want to write a fictitious script based on this chapter of history, it’s called Killer Capital and here’s its synopsis:

The Train-Feeder. The Skin-Scratcher. The Balcony-Scaler. The Pornographic Men. All of them convicted serial killers once active in the same city during the same decades. While the eight of them were reprimanded by a determined and obsessed detective, there are at least ten who escaped justice.

Now, a new serial killer has made themselves known, and a true-crime novelist wants to capitalize on the scenario. He is granted permission to interview the serial killers in prison who managed to elude police capture for nearly half a century.

The author interviews the killers about the crimes they committed and they are happy to recount them. He asks about who they were before they first committed murder and what they would be doing if they weren’t arrested.

In between sessions with the serial murderers, the author does research on the now-deceased private detective responsible for helping put eight serial killers behind bars. He reads the police reports for nearly every serial murder in the city from the 70s onward.

After being turned down for an interview by the detective’s daughter, she changes her mind. She reveals to the author that her father became so obsessed with solving the serial killer case, he turned to alcoholism and would beat his wife after getting drunk.

She allows the author to read her dad’s diary from the time he was investigating the serial killer cases, in exchange for him writing the truth about her father and what he did to his family.

She tells him that he didn’t solve the cases alone, he had help from someone she didn’t know and her dad refused to speak about. One day she overheard her dad speaking about cases on the phone with a man with a raspy voice.

The author reads the detective’s journal and gets a feel for who the person was, while continuing to interview the imprisoned serial killers. Halfway through the diary the writing becomes difficult to decipher until it’s completely illegible.

The author skips ahead to when the detective was retired and after he quit drinking, There’s one final passage, that appears to be some sort of mantra. The author goes back to the daughter of the detective and asks about what the final passage in his diary means to her.

The detective’s daughter starts to cry and is too traumatized to talk. Later, she reveals the writing in the journal made her remember when she was a child.

She found a dark uniform and mask in the basement and showed her mom. Her mother was confused and confronted her husband about it. The detective put on the mask and beat his wife while chanting the same mantra found in his diary, in the same raspy voice the daughter heard on the phone with her dad. Her father developed multiple personality disorder.