Philip Glenister delves into the mindset of a murderer and explores their actions, starting with the disappearance of children's author Helen Bailey.

Philip Glenister delves into the shocking story that unfolded in the aftermath of mother-of-four Saima Khan's tragic murder in her Luton home.

The manhunt spanned three countries when Geoff Seggie was murdered in his Derbyshire home. His killer eventually made contact, but he never revealed his motive.

Philip Glenister explores the aftermath of Bei Carter's murder in Bridlington. The investigation hinged on the public's sightings after her killer vanished.

In January 2013 Peter Fasoli, 58, was tortured and strangled by Jason Marshall who posed as an MI5 agent during a ‘meeting’ between the pair at Fasoli’ s London home. Once Fasoli was dead Marshall set fire to his house to cover his tracks.

Mother-of-one Sian Roberts was murdered at her Salford home by her friend Glynn Williams, as they returned from a party in the early hours. Williams stabbed her to death after she confronted him about stealing her jewellery.

Norma Bell, 79 was strangled to death and left in her burning Hartlepool home by Gareth Dack, who would often visit her as he was a friend to one of her foster children.

Kate Prout was murdered by her husband Adrian on 5 November 2007 at their £1.6million country estate in Gloucestershire. After strangling his wife, Prout poured himself a glass of whisky, wrapped her body in a curtain and put it in the boot of his car.