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An in-depth look at some of the world's most dangerous murderers.
S8, EP15 "Nicholas Burton"
In April 1997, 27-year-old Rachel McGrath is stabbed to death by an unknown attacker in a car park.
S3, EP2 "Diane Downs"
Diane Downs was convicted of the May 1983 murder of her daughter and attempted murder of her other two children, yet she told police a stranger had attempted to carjack her and had shot the children.
S8, EP16 "Joe O'Reilly"
Less than 20 minutes after dropping her children off at school, Rachel O'Reilly is murdered.
S7, EP2 "John Cannan"
Experts look back on the crimes of John Cannan as he moved in and out of prison.
S10, EP20 "Barry Prudom"
In 1982, Barry Prudom sparked Britain's largest ever manhunt, murdering police officers and civilians.
S10, EP19 "Paul McNaughton"
In August 2022, retired teacher Peter Coshan vanished after meeting a man through a dating app in Edinburgh.
S10, EP18 "David Baxendale"
In May 2010, mother of three Sarah Thomas was stabbed to death in her Surrey home.
S10, EP17 "Tariq Rehman"
In February 1995, the city of Bradford in West Yorkshire was shaken to the core by the murder of two children.
