A pregnant mother of two, Lynda Farrow was stabbed at home before being discovered by her eight-year-old daughter.

A cocktail waitress in a Mayfair club, Eve Stratford, is found with her throat cut and her hands tied up.

Sixteen-year-old Lynne Weedon was sexually assaulted and beaten to death near her West London home, but despite foreign DNA being found, the case remains unsolved.

As Colin Sutton, Mark Leach and Jo Brunt move forward with their investigation into the murders of Lynda Farrow, Eve Stratford and Lynne Weedon, the team looks back over the information they have gathered, and a suspect starts to emerge.

Former Metropolitan Police detectives Colin Sutton, Mark Leach, and Jo Brunt start investigating the cold case murders of three young women in the 1970s. A key link between the murders may reveal the pattern of a serial killer.