The 8th series opens with a bizarre case. Roger and Josie Hartland found themselves stalked by their new home's previous owner, who claimed to be a former resident of a Nazi breeding camp, producing children for Hitler's Aryan race.

Helen Torbet visited the Highlands every year and stayed at the same guesthouse, but over the years the son of its proprietors - Don MacMillan Junior - had developed an unhealthy obsession with her.

Sandra Parkinson was a vibrant young woman filled with potential. Working in Salcombe, Devon her life was ended when she was murdered in broad daylight just a few metres from a busy beach.

When Patricia Causley disappeared, her husband managed to convince police that she had walked out on her own volition. A decade later, detectives piece together what had really happened.

Nora Trott, a much-loved member of her community, was savagely murdered. 27 years after her death, advances in DNA technology would allow police to find a suspect in her case.

Michael Brown claimed to be a sensitive man, held back by the fact he was only five feet tall. His frustrations at his inability to get a job drove him to murder.

This edition examines the murder of Jean Dicker, who was battered to death with a hammer at the hands of her son, Steven.

Percy Mapleton was looking for a way to a fast fortune, and identified Brighton bond trader Isaac Gold as his target, but a robbery on a moving train turned into tragedy. Prompted the first composite picture on a wanted poster in the UK.

In order to avoid paying for an expensive divorce while having an affair with a much younger woman, Michael Peacock planned what he thought would be the ideal murder.

The eighth series of the true crime documentary concludes by examining the crimes of Peter Moore, a man who turned to murder following the death of his mother. The cinema manager was dubbed "The Man in Black" and killed 4 men.