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A woman murders her sister after developing a deadly obsession with her brother-in-law.
A woman murders her sister after developing a deadly obsession with her brother-in-law.
More episodes
Britain's Most Evil Killers
S5, EP1 "Stephen Farrow"A profile of the double-murderer who killed a 77-year-old teacher and a 59-year-old reverend.
Britain's Most Evil Killers
S4, EP9 "Peter Moore"In December 1995, serial killer Peter Moore is charged with the murder of four men in North Wales, admitting to nearly 50 violent and brutal attacks on defenseless men between 1975 and 1995.
Britain's Most Evil Killers
S1, EP4 "Fred & Rose West"Fred and Rose West rape, torture and kill young women in their house of horrors, including their own daughter; between them, they murder 12 girls; interviews with investigators including Chief Constable Tony Butler.
Britain's Most Evil Killers
S6, EP6 "Pawel Relowicz"Pawel Relowicz rapes and kills 21-year-old Hull student Libby Squire in a case that made headlines around the UK.
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.
