What Makes a Killer

A look into the life and crimes of the world’s most infamous serial killers. Featuring interviews with family members, forensic experts, law enforcement, and witnesses. From John Wayne Gacy and Jeffrey Dahmer to the “Night Stalker” Richard Ramirez and the Butcher of Plainfield, Ed Gein–What Makes a Killer explores how they became killers.

00:45:15 2022-06-30
1980s Washington. One of the most prolific serial killers of all time, Gary Ridgway, preyed on vulnerable young women, runaways and sex workers. With his un-assuming persona and habit of dumping bodies in the nearby Green River, Ridgway was able to commit...
00:41:17 2022-06-23
On July 25th, 1994, a suspected murderer entered a small gas station in North Yorkshire, England. As he browsed the store, the owner of the station recognized him. This man was wanted for the murder of four people, and had been on the run for a week. Two ...
00:41:25 2022-06-16
May 1984, at the Lane County Courthouse in Eugene, Oregon. A mother of three stands accused of murdering her seven year old daughter, and of the attempted murder of her other two children. When her daughter testifies against her mother, it becomes all too...
00:42:44 2022-06-09
On July 14th, 1990, in Stow, Scotland, a 6-year-old girl was walking to her friend’s house when she was suddenly pulled into a car off the side of the road. A local man who had been working in his garden saw the girl disappear into the van and quickly c...
00:41:53 2022-06-02
It's 1988 in Kansas City, Missouri. Young, vulnerable men are going missing without a trace, and no one can seem to figure out why. A local man named Robert Berdella–known as an upstanding member of the community–has been secretly holding these men in...
00:44:10 2022-05-26
In August of 1998, a woman by the name of Christine Smith was picked up from her usual spot on the notorious downtown strip known as "the track" in Spokane, Washington. After providing her services to the man, he shot her in the head. She survived the att...
00:45:18 2022-05-19
It’s July, 1975 in Manchester, England. One man, dubbed "The Beast of Manchester" was responsible for sparking immense fear across the city. This "beast" was the unpredictable and violent 30-year-old Trevor Hardy. He seemed to truly enjoy the act of kil...
00:45:01 2022-05-12
From 1974-1991, the city of Wichita, Kansas was gripped with fear as a violent serial killer was on the loose. The killer, known to the public by his alias BTK, was an unassuming family-man named Dennis Rader. He would attack people in their own homes bef...
00:01:52 2022-05-05
What Makes a Killer is a series that chronicles the lives and crimes of the world’s most notorious killers. In every episode, host Jennifer Nittoso will trace a killer’s origins, examine their behavior, and follow their path to bloodshed. As always, t...
00:46:01 2021-06-24
It's May 1990, and convicted murderer Jack Unterweger is about to charm his way out of prison. After teaching himself how to read and becoming a well-known children's author, Unterweger had convinced the Austrian public that he was a changed, reformed man...
00:44:15 2021-06-17
It’s 2010 in Bradford, West Yorkshire. Local man, Stephen Griffiths has just returned home from a night out with a woman in tow. Seconds later, she's seen on security footage running for her life away from his apartment. Griffiths, seen with a crossbow,...
00:40:48 2021-06-10
Yosemite National Park, located in the picturesque Sierra Nevada mountains, was all but serene for five months in 1999. Fear ran rampant as four women were viciously murdered. The prime suspect was 37-year-old Cary Stayner, a handyman at a local lodge. Af...
00:45:20 2021-06-03
On December 2nd 2015, Horst Kroner boarded a plane to Thailand, intending to spend his vacation sleeping with various women. While he was away, neighbors became increasingly concerned about the whereabouts of Kroner's wife. They didn't know it yet, but tw...
00:45:08 2021-05-27
On August 19th 1987, the citizens of Hungerford in Berkshire woke up to a seemingly picturesque summer's day. While a mother sat in a park with her children, she was approached by a young man named Michael Ryan. As she turned to face him, Michael Ryan sho...
00:36:38 2021-05-20
April 7th, 2016, police were called to the Peabody Estate in South London after receiving complaints from tenants about a putrid smell. The two police officers knocked on the door of 49-year-old Stefano Brizzi’s apartment and waiting for them inside was...
00:47:15 2021-05-13
In the summer of 1996, all of Belgium was in shock when two young girls who had been kidnapped, raped, and tortured were rescued from a makeshift dungeon below a house in Marcinelle. As the weeks passed, the bodies of four other young girls were found bur...
00:42:54 2021-05-06
It's July 1st, 2000, and an eight year old schoolgirl is playing in a field outside of her grandparent’s house at Littlehampton in West Sussex. She disappears from sight for only a moment, but that is enough time for her abductor to make his move and st...
00:46:02 2021-04-29
In July 2010 in Northumberland England, a jealous ex-boyfriend goes on a violent rampage after deciding that police have taken too much from him, including his relationship. He effectively declares war on the police after killing his ex's new partner, and...
00:46:26 2021-04-22
In April 1991, doctors at Grantham and Kesteven hospital in Lincolnshire were perplexed. In just two months, the health of 13 children had mysteriously deteriorated and four of them had died. But this was no unfortunate coincidence. One of the nurses was ...
00:50:13 2021-04-15
On October 3rd, 2012, Coral Jones gave an emotional televised appeal for the safe return of her daughter, April. The five-year-old had been missing for 36 hours – she’d vanished while playing outside her home in the rural welsh town of Machynlleth. Th...
00:45:21 2021-04-08
On June 2nd 1985, San Francisco police were called to a lumberyard to apprehend a shoplifter. By the time they arrive the suspect had already fled, but the man's partner is still at the scene. The man in in possession of a gun fitted with an illegal silen...
00:40:26 2021-04-01
In the winter of 2006, the town of Ipswich, England was left horrified as the bodies of five missing female sex workers were found by police. The discovery launched a massive manhunt that resulted in police questioning over 2,000 men. Police raced against...
00:02:15 2021-03-25
What Makes a Killer is a series that chronicles the lives and crimes of the world’s most notorious killers. In every episode host Jennifer Nittoso will trace a killer’s origins, examine their behavior, and follow their path to bloodshed. As always, th...
00:41:37 2020-09-24
On May 10, 2012, a blazing fire engulfed a family home in Allentown, Derby. The parents, Mick and Mairead Philpott, were able to get out alive, but there were six children trapped inside. All six perished in the tragedy . . . but it was not an accident. I...
00:44:00 2020-09-17
In April 1973, in Santa Cruz California, a 24 year old man is on the run for the violent murder of his mother and her best friend. The only problem? Authorities have no idea that the crime has been committed. After three days of driving, and with no media...
00:41:41 2020-09-10
On August 2nd, 2012, twelve year old Tia Sharp went missing after supposedly  traveling by train to meet up with some friends for the day. She is due back home in the evening evening, but she never arrived. What followed her disappearance was one of the ...
00:45:12 2020-09-03
On June 20, 1970, the hunt was underway for a missing 12-year-old girl named Robin Samsoe. She had last been seen with her friend talking to an older man with a camera. When the man's description was circulated, he was immediately recognized by his parole...
00:46:31 2020-08-27
On May 31st, 1983, Polish police were dispatched to check out a supposed robbery. A neighbor had called when he realized his pig cooker was stolen . . .but police were well aware that the accused man, Pawel Tuchlin, was guilty of things that were far more...
00:38:52 2020-08-20
On November 12th, 2002 police received a call from a terrified 14 year old boy and his 11-year-old sister. They had returned home from school to find their mother, Heather Barnett, brutally murdered. Police arrive at the scene to find the victim’s child...
00:47:16 2020-08-13
In February 1988, a 29-year-old John Duffy was on trial for the rape and murder of three women. He was a terrifying figure, and infamous across London. His arrest brought an end to a horrific four-year crime spree across the British capital, but he was on...
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