The story of what happened when an elderly woman died, and her daughter-in-law first notified the police, leading to a suspicious discovery.

The story of what happened when a former police officer's wife died, and he was treated like a grieving husband, until the details didn't add up.

The case of what happened when a young firefighter dies in suspicious circumstances, and investigators discover he wasn't the only victim.

The story of Gregory Davis, who was murdered in what looked like a paid hit, leading the authorities towards a web of lies.

The story of the disappearance of the McStay family, which shook California. What followed was a mystery that lasted for years.

The story of businessman Alan Helmick, who was found dead in his home, leading the Police to uncover a tangled web of fraud and theft.

A look at the case of Carole Waugh, who returned to London and fell for a fraudster who was determined to get her money.

A look at the case of Sarah Stern, who inherited a large sum of money from her mother, then disappeared.

A couple set up a weapons business in West Virginia. All is not what it seems, leading to a fatal end.

Dr Peter Coshan, a retired teacher in Edinburgh, vanishes after falling victim to a fraudster's charms.