Meet the neighbor who waves politely, the friend who is the life and soul of a party, the colleague who buys the coffee. All are ready to kill, rape or harm.
His Name Is Evil: Levi BellfieldSerial killer Levi Bellfield, who murdered 13-year-old Milly Dowler. Family and friends offer an insight into his life and career
Massacre in the Lakes: Derrick Bird
E2
Massacre in the Lakes: Derrick BirdFriends and family of Derrick Bird reflect on the life of the Cumbrian killer, who shot his brother and 23 others before turning the gun on himself in June 2010
The Nightstalker: Delroy Grant
E3
The Nightstalker: Delroy GrantFriends and family of Delroy Grant discuss the life and crimes of the serial rapist, who cared for his disabled wife throughout the day, but preyed on women during the night
The M25 Rapist
E4
The M25 RapistThose who knew Antoni Imiela offer insight into the private life of the serial rapist. He had terrorised girls and women in the M25 area between 2000 and 2002, resulting in the police creating a special unit to catch him.
Ivan The Terrible: Ivan Payne
E5
Ivan The Terrible: Ivan PayneThis story marks the first of a litany of child abuse scandals that rocked the Catholic Church. No one stood more respected in his community than Father Ivan Payne. A master of deception he terrorised children for three decades.
The Man In Black: Peter Moore
E6
The Man In Black: Peter MooreFormer friends of Peter Moore offer a glimpse into the dark double life of the Welsh serial killer, who murdered and mutilated four men in 1995
Conman, Bigamist, Thief: Will Jordan
E7
Conman, Bigamist, Thief: Will JordanWilliam Jordan was a Bigamist, conman and paedophile. His wives Mary and Michelle thought he was a CIA agent fighting global terrorism. In reality he was an IT wiz kid working for the British government.
The Ward Assassin: Beverley Allitt
E8
The Ward Assassin: Beverley AllittThe people who knew Beverley Allitt offer an insight into the motivations of the serial killer, who murdered four patients at Grantham and Kesteven Hospital in 1991
The Crossbow Cannibal: Stephen Griffiths
E9
The Crossbow Cannibal: Stephen GriffithsThose who knew crossbow killer Stephen Griffiths reveal their horror at discovering he had murdered three women and even eaten parts of their bodies.
Anders Breivik
E10
Anders BreivikA profile of right-wing extremist Anders Breivik, who killed 69 people on Utoya island, Norway, in 2011, less than two hours after setting off a bomb in Oslo
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