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Sarah Williams and Katrina Walsh, the two friends carry out the jealousy-fuelled murder of Sadie Hartley.

Sarah Williams and Katrina Walsh, the two friends carry out the jealousy-fuelled murder of Sadie Hartley.

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Britain's Most Evil Killers

S5, EP6 "Jason Marshall"

A look at the twisted killer who tortured and murdered a man in his home while filming it.

Britain's Most Evil Killers

S5, EP10 "Billy Dunlop"

A profile of the killer who, after killing 22-year-old Julie Hogg, became the first person to be convicted under revised UK double-jeopardy laws.

Britain's Most Evil Killers

S6, EP4 "Sarah Williams & Katrina Walsh"

Sarah Williams and Katrina Walsh, the two friends carry out the jealousy-fuelled murder of Sadie Hartley.

Britain's Most Evil Killers

S6, EP8 "Geoffrey Evans & John Shaw"

Geoffrey Evans and his accomplice John Shaw hit headlines in 1976 after the murders of two women in Ireland.

Britain's Most Evil Killers

S9, EP2 "Gavin McGuire"

Teen Mhairi is killed on her walk home after a festive night; investigators trace her last steps, using CCTV and forensics that point to Gavin, a violent repeat offender whose history reveals how dangerous he truly is.

Examining some of the most dangerous and prolific murderers in the UK and worldwide.
Starring: Andrew Laptew, Andy Baker, Chris Carter, Chris Sheen, Elizabeth Yardley, Emma Johnson, Geoffrey Wansell, Harold Gasnier, Jonathon Michaels, Kirsty Nunn, Matthew Couchman, Paul Cheston, Rex Julian Beaber, Rod Chaytor, Stuart Hamilton
Original Air Date: Mar 2, 2017
Genres: DocuseriesTV Series
Rating: TV14
Playback: HD
7 seasons available on demand
Available on

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