Killer Britain with Dermot Murnaghan - Season 3

Crimes that caused shockwaves across the UK, beginning with a look back at the winter of 2004-2005 when 25-year-old Mark Martin murdered three women in Nottingham city centre. Dermot Murnaghan and former Detective Chief Inspector of the Metropolitan Police Clive Driscoll delve into the killings of Katie Baxter, Zoe Pennick and Ellen Frith, piecing together the killings with the help of those that knew the victims and the killer.

The case of Glyn Dix, who shot his landlady after consistently failing to pay rent. Dix was sentenced to life in prison but during his sentence he fell in love with a fellow inmate's mother Hazel Griffin and the pair married in 2001 following Dix's release. After a psychotic episode, Hazel's son found Dix crouched over his mother's dismembered body.

The case of James Fairweather, a 15-year-old boy who viciously stabbed two strangers to death in separate attacks. Fairweather avoided investigation in the first instance after providing an alibi to police detectives. However, he was spotted a year later by a concerned dog walker wearing rubber gloves and carrying a knife.

The killing of Sana Muhammad, who was murdered by her abusive ex-husband Ramanodge Unmathallegadoo, after six years of stalking and surveilling her movements.