The stories of three murder investigations and their extraordinary consequences, which overturned laws, transformed police interrogation and revolutionised forensic detection.
Watch now on iplayer here
- 9th October, 9pm, BBC2 (Except Wales)
- 9th October, 11.15pm, BBC2 Wales
- 16th October, 9pm, BBC2
- 23rd October, 9pm, BBC2