Examining the events surrounding the murders in April 2016 of Elizabeth and Katie Edwards at the hands of Britain's youngest double-killers. 14-year-olds Kim Edwards and her boyfriend Lucas Markham.

Britain's youngest double murderers Kim Edwards and Lucas Markham were just 14 when they slaughtered Liz Edwards, 49, and her daughter Katie, 13, as they slept in their beds. After knifing the mother and daughter ten times, the twisted young couple ate tea cakes and ice cream before watching the vampire movie series Twilight and having sex. The two had developed a morbid obsession with the murder of school pal Adam Free's dad Warren just months before the double killing.—Ulf Kjell Gür