How They Caught...
Every month we go behind the scenes of a police investigation to find out how forces up and down the UK have solved some of the most puzzling cases. Matthew Amroliwala investigates. Click on the cases below to watch the film and read more about the cases.
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How Lancashire Police and forensic experts were able to identify Robert Morley as the killer of nine year-old Preston schoolboy Imraan Vohra. Click here for details on the case.
How the Serious Organised Crime Agency tracked down a group of counterfeiters after a tip-off and months of surveillance.
How Sussex Police finally tracked down David Chenery-Wickens, who was convicted of the murder of his wife Diane, a year after he first reported her missing.
How Hampshire Police tracked down the killer of Harjit Singh-Luther despite having nothing to go on apart from a crushed skull.
How Greater Manchester Police were locked in a race against time to find enough evidence to charge a triple murderer before he walked free.
How a note for the milkman led Sussex Police to David Munley, a psychopath who killed an elderly lady and then fooled the outside world into thinking she was still alive.
How the Met's Specialist Crime Directorate and the Forensic Science Service thwarted an attempt to smuggle cocaine into the UK in a way never seen before.
How a hair sample helped North Yorkshire Police convict Heather Mook who poisioned her husband by putting pills in his favourite pasta dish.
How soil samples and forensic anaysis led Leicestershire Police to Eileen and Derek Severs' bodies and enabled them to arrest their son Roger for their murder.
How tenacious policing enabled West Yorkshire Police to track down the killer of 16-year-old schoolgirl Leanne Tiernan.
How a fire in a local postbox led Dorset Police to track down the Tesco extortionist Robert Dyer.
How one man's decision to become a police officer enabled Surrey Police to convict the paedophile James Evans.
How a rusty old car tyre enabled North Wales Police to convict Fred Lawlor of the murder of his partner Dorothy Carre.
How familial DNA helped the South Yorkshire Police finally track down the Rotherham shoe rapist.
How one man taunted the police by claiming to be the Yorkshire Ripper and how DNA evidence brought him to justice.
How Mario Celaire was tried a second time for killing his ex-girlfriend Cassandra McDermott thanks to a new double jeopardy law.
A film showing how determined SOCA officers managed to track down a gang who imported £1.5 million worth of heroin in Afghan rugs.
Use the dropdown menus to search for cases by crime type, location or date of show.
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