4x1 - The Cruellest Cut

Greenford, London, where 28-year-old Geeta Aulakh was murdered in 2009.

4x2 - Confessions of a Killer

A look at the shocking murder of 65-year-old Maureen Cosgrove, who was killed by her daughter's partner in her £800,000 home in London in 2009.

4x3 - The Judas Sisters

A look at the murder of Antoni Robinson, who was killed by his daughters Ashleigh and Holly and their boyfriends for the contents of his safe.

4x4 - The Body in the Freezer

A look at the shocking death of pub landlady Rebecca Thorpe, who was found murdered in a freezer in the quiet Norfolk village of Snettisham in 2010.

4x6 - In the Dead of Night