When cats started to turn up dead, people quickly began to suspect a psychopath lived amongst them. Little did they know that this killer had his eyes set on much larger prey than the local felines.

When Preston Police found Ben Topping parading over the battered body of his girlfriend Rosie Darbyshire, they were determined to bring him to justice

Penny Jackson openly confessed to police to stabbing her husband to death but claimed she only did so after having been pushed to her limit

In 1966, the small town of Beenham in Berkshire was rocked by the horrific murder of a local caretaker.

Sixty-six-year-old Penny Jackson, a retired accountant, had murdered her ex-army officer husband, David Jackson, with a paring knife; coldly stabbing him on three separate occasions before calmly phoning the emergency services

In the conclusion to the award-winning documentary series, survivors of the notorious criminal R&B megastar R. Kelly share their stories.

John Heald was a violent misogynist who's short temper and paranoia led to the death of hotelier Bei Carter

On a seemingly normal afternoon in Chatham, Molly McLaren was savagely hacked to death by her Ex-boyfriend Joshua Stimpson in a busy car park.

To anyone looking in from the outside, Dan Seggie seemed like a devoted son living with his elderly father. Was Dan really the loving son everyone thought him to be, or was he a savage killer?

Jordan Monaghan killed his daughter and then he killed his son, but the police couldn't prove anything.

Having had an affair with her sister's husband, Sabah Khan turns to murder to hide the truth.

A look at the brutal murder of an 11-year-old boy with Cystic Fibrosis back in 2006, where the murderer is his 14-year-old classmate named Michael Hamer.

Christa Richello is convinced Chris Watts is innocent and is writing a book with him and her now-fiancé, Dylan

Audrey and Eric Hingston, 81 and 83, enjoy the twilight of their happy marriage until Eric's life was suddenly ended during a supposed burglary

Parenting expert Jo Frost explores the psychology of child murderers, starting with Daniel Bartlam

In one of the biggest investigations ever carried out by Tayside Police, evidence in the case of a pensioner's murder leads to a family friend.

In 2007, Drew Peterson was charged for murdering Kathleen, his third wife; new interviews with Drew's girlfriend, Nicole Speakman, shed new light on the case

Towards the end of that July alarm bells started to ring when those close to Tina hadn’t seen her for two weeks.

Parenting expert Jo Frost examines the case of a child obsessed with serial killers, who stabbed two strangers to death in Colchester in 2014

In new interviews, Robyn Adams shares how Casey Anthony lured her into a friendship

When stuff goes missing, Brittany Campbell blames her husband; she doesn't know a stranger living inside their home plans to use the couple in medical experiments.

It was around five in the morning on 31st January 1978, when a scream echoed through the rooms of ‘The Nook Rest Home’ on Blackpool’s South Shore.

The story of a man in Belfast, Northern Ireland, who was jailed for killing his lover's husband, before lying to police about the chain of events in the hope of escaping prosecution.

We tell the true story of Mark Fellows, and the persistence and ingenuity that brought the feud to an end.

One of the brothers walked among the trees to find firewood. Just a few feet in, he saw the unmistakable shape of a human skull

In August 2009, the body of David Lace was exhumed from Kingston Cemetery in Portsmouth more than twenty years after he had died.

With her fiancé Brian, Gabby Petito lived the travellers life, hopping from place to place in their camper van. But alarm bells begin to ring when Brian returns home alone.

The twisted case of Harry Jarvis, who murdered his wife, Carol Jarvis, and tried to conceal his crime by hiding her body under the floorboards in their home.

The scary true story of 17-year-old Thomas Griffiths, who ended the life of his girlfriend and arranged the crime scene to look like a suicide after she broke up with him

Graham Hill examines how Irish dance champion Adrian Murphy fell victim to the fatal intentions of Diana Cristea and her boyfriend Joel Osei.

The story of Ben Geen, who was convicted of murdering the patients in his care at Horton General Hospital.

Former fisherman Maheswaran Kaneshan sought asylum in the UK but became caught up in a gang feud that turned deadly.

After Richard Beasley uses a Craigslist ad to lure three men to their deaths, his daughter, Tonya, becomes devastated after realising that she has unwittingly assisted her father

In December 2007, 52-year-old Sharon Birchwood was killed at her home in the sleepy village of Ashtead, Surrey.

Jody Dobrowski was just 24 when his life was ended, he could only be identified through fingerprints.

Kristine Bunch served more than 17 years behind bars after being wrongfully convicted for starting the tragic house fire that killed her young son.