Police begin to prise open the secret sex lives of men across the country. One of the biggest manhunts in Scotland's history gets underway.

CREDITSReporter: Samantha PolingProducer: Mona McAlindenAudio Editor: Jennifer TraceyStory Editor: Kirsty WilliamsAudio editing and mixing: Fraser Jackson and Kris McConnachieExecutive Producers: Jennifer Tracey and Shelley JofreCommissioning Editors: Louise Thornton and Gareth HydesThanks to Matt Roper Special thanks to Eamon O Connor and all those who trusted us to tell their stories.Who Killed Emma? is created and made by BBC Scotland on BBC Sounds.