A woman's body is found at a pumping station in Hull. Senior Investigating Officer Paul Davison is tasked with finding out how she was murdered.

North Ridgeville, Ohio. The body of a woman is found at the end of a cul-de-sac. Detectives must solve this unthinkable murder in an idyllic town.

Outside Cromford railway station in Derbyshire, Senior Investigating Officer Tony Blockley and his team find a perplexing murder scene.

A victim is partially decapitated during a home-invasion turned murder scene in Miamisburg, Ohio. Investigators must work against the clock to unravel the ghastly crime.

A body is found in Cumbria - 70 miles from home. Eight years of tireless investigative work later, a piece of evidence blows the case wide open.

A beloved Spanish teacher is found in her bathtub in what appears to be a tragic accident. One first-on-scene investigator isn't convinced, but can he bring the killer to justice?