How I Caught The Killer  Episode Rating Graph

After a badly decomposed body was found in a suitcase by a railway embankment in Exeter, Police hunt for the killer with only CCTV evidence to go on.

Police painstakingly trawl through hours of cctv footage, location data and forensic evidence to find the brutal killer of a heavily pregnant woman

In 1981, detective Mike Southwell investigated a missing persons case that contained one of the grimmest discoveries in British police history

In 2002, police made a starling discovery inside a locked room in Anthony Hardy's home. This was merely a horrifying prelude for what was to come.

In 1986, Detective David Baker became the first person to use DNA profiling in a criminal investigation, when looking for the killer of two young girls.

Benjamin Laing: Six days after Matthew Manwaring and his daughter Alison vanish, police uncover a grisly scene at Benjamin Laing's home.

When elite racer Anna Wilson was shot and killed, police launched a manhunt to Costa Rica in search of Kaitlin Armstrong.

When Julie Jensen is found dead, police suspect her husband Mark of murder - despite the seemingly happy family life.

When Lanell Barsock is found dead in her home in Palmdale, California, evidence points to her boyfriend before investigating detectives start to focus on her best friend, Larene Austin.

The Highway Hunter - Adam Leroy Lane: When police find the body of Monica Massaro in her home with 17 stab wounds, they're led to serial killer Adam Leroy Lane.

Douglas Ward: When young kickboxing champion Niall Dorr was beaten to death in Dundalk, CCTV helped detectives convict his killer.

How the investigation into Phillip Inhofer at his home in Sacremento led police to a 20-year-old call girl known as Bat Girl.

Officers investigate the murder of Christoper Donovan by a gang of youths.

After going missing for a year and a half, many believed 14-year-old Cheyenne had run away from home. However, closer analysis revealed the tragic truth.

After finding her dead in a bathtub full of bleach, detectives narrowed down the killer from 210,000 possible suspects.

How police used CCTV, eyewitness statements and a public appeal to find the killer of a 28-year old woman, found dead on Nottingham's streets

With no CCTV and no witnesses, detective Jon Buehler must find the person responsible for a drive-by shooting of "gentle giant" Sula Palega.

DNA left on a cigarette butt leads investigators to the brutal killer of 84 year-old gun enthusiast Kenneth spearman

An unlikely informant holds the key to justice when 59 year old antique dealer michael Griffiths is targeted and brutally killed in his home

A computer at vogue magazine held the key to identifying julie clayton, an ex-cult member who'd been assaulted and murdered upon leaving