The true crime series returns. Katherine travels to Portsmouth to learn about Allan Grimson, a former Royal Navy petty officer who murdered two men on 12th December of 1997 and 1998 and may have killed others on the same date each year.
Following his release from prison Jordan Davidson burgled retiree Nicholas Churton at knife point, threatening him but leaving him unharmed. Days later Churton's bloody and beaten body was discovered in his home.
The story of Reginald Wilson, who planned to carry out the perfect murder. He selected Dr David Birkett to be his victim and posing as a courier entered his home killing him with a hammer. But Wilson made a fateful mistake.
The story of Britain's youngest female double-killer. 15-year-old Lorraine Thorpe befriended two alcoholics and got them to help her torture and kill Rosalyn Hunt. The trio then turned their attention to Lorraine's own father Desmond.
In Nuneaton, we hear from David Freeman, who's younger sister Naomi Smith was tragically murdered on her way to post a letter, as he tells us of the family's quest for answers about who could have done this to her.
Devastated father Keith Vincent retells the story of the sequence of events that led to his son Adam living on the streets of Grimsby, and the circumstances which eventually led to his brutal murder at the hands of a notorious drugs gang.
Airing as a part of domestic violence awareness week - this film tells the dramatic and shocking story of Mario Celaire - a man who viciously assaulted two women he claimed to love.