Investigators contemplate the true identity of the so-called Golden State Killer, the most prolific serial predator in California history

Cold case investigator Paul Holes digs deep to understand where the Golden State Killer likely lived and what he probably did for work. This crucial information known as 'geographic profiling' could determine the predator's current whereabouts. Meanwhile, utilising updated audio technologies, citizen sleuths analyse one of the few phone calls left by the perpetrator before his first murder

The case of Patricia Mills, who was killed in a house fire in Texas. Detectives believed that the fire was set deliberately, but it took them 10 years to finally trap the culprit

The case of 23-year-old Sherry Leighty, who disappeared without trace in 1999. Police investigations eventually uncovered a dark secret leading to a shocking discovery

Our experts analyse the former Prime Minister's colourful past and complicated relationship with the truth. Was his career littered with lies?

Experts in body language, linguistics, and psychology study police bodycam, spotting the signs that point to the murder of Gabby Petito

Buying goods from the comfort of home

Buying goods from the comfort of home

Buying goods from the comfort of home

Buying goods from the comfort of home

Award-winning journalist Paula Zahn goes beyond the headlines in search of fascinating mysteries from within America's justice system

Police were stumped when two young adults were found dead weeks apart. Disturbing text messages and contradictory statements suggested they were murdered

Two young women, dreaming of big success as television anchors and just embarking on their careers, whose plans came to a violent end. They were murdered in their own apartments and there were no signs of forced entry

The case of Chris Smith, who moved to Southern California with dreams of success. After making a fortune, he decided to travel the world, but never returns home

How, when the body of Army sergeant and father Re'Mano Campbell was found slain in his house in Prichard, Alabama, local investigators unravelled a disturbing web of lies

A case in which a 19-year-old went goes missing after going to a party. Her remains were found in a field 15 months later, leaving officers perplexed as to determining a motive

Two women who headed out into the night, full of youthful life and promise, but never came back. Clues came from behind bars to solve the mysteries that surrounded the disturbing disappearances of the duo

When doting mother Cheryl Coker vanished from Riverside, Ohio, in October 2018 search efforts came up empty. However, police uncovered disturbing information and a web of secrets

How, when 93-year-old Penny Knell was admitted to a special care facility, a devious mastermind was waiting to prey upon society's most vulnerable

From the outside, 34-year-old Linda Singleton's life appeared picture perfect. However, no one knew that she was engaged in a deadly love triangle. When the affair came to light, her perfect life came to an untimely end