When Tony Parsons set off for a charity cycle ride through the highlands of Scotland - his family assumed he would return with tales to tell. But Tony Parsons never came back. How could someone vanish on a busy road, with no trace of what happened? This series tells the story of Tony's final journey, and the exhaustive search for answers. With exclusive access to his family, and the team from Police Scotland who conducted one of their largest searches in the force history - we tell the story of mystery which threatened to never be solved. Through six episodes we reveal exactly what happened to Tony, and the impact the case has had on his loved ones.

Presented by Jane MacSorley. Produced by Firecrest Films.