Is this man Emma's killer? Sam confronts a prime suspect with her evidence.

CREDITS
Reporter: Samantha Poling
Producer: Mona McAlinden
Audio Editor: Jennifer Tracey
Story Editor: Kirsty Williams
Audio editing and mixing: Fraser Jackson and Kris McConnachie
Executive Producers: Jennifer Tracey and Shelley Jofre
Commissioning Editors: Louise Thornton and Gareth Hydes
Thanks 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.