A dramatic twist in the hunt for the killer. Those at the heart of the case come forward.
The sexual violence reported, the promises made and the women who wait for justice.
Is this man Emma's killer? Sam confronts a prime suspect with her evidence.
The conflicting stories and evidence that point towards a man with a past.
A suspect comes forward asking for help, but can he be trusted?
The isolated forest where Emma's body is found offers clues.
Disturbing night-time activity in a Glasgow cafe becomes a focus for the police.
Police begin to prise open the secret sex lives of men across the country.
A young woman living in Glasgow goes missing in the night.
A missing woman. A brutal murder. And a confrontation with a prime suspect.