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An in-depth look at some of the world's most dangerous murderers.
S9, EP16 "David Marmolejo"
Gloria Marmolejo's attempt to stop her son's illicit relationship ended in her murder by him.
S7, EP4 "Colin Campbell"
Thirty-two years later, a convicted killer serving life for manslaughter is found to be guilty of having committed a second murder.
S9, EP2 "Gavin McGuire"
Teen Mhairi Julyan was murdered, and forensics led police to violent repeat offender Gavin McGuire.
S8, EP4 "Jerald Wingeart"
In January 1973, 20-year-old mother of one Dawn Magyar vanishes while on a shopping trip in Owosso, Michigan.
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.
