Tracks: Series 1 & 2

Tracks: When Dr Helen Ash witnesses the brutal and disturbing crash of the plane that is carrying her father, the incident sets her on an investigation into a dark conspiracy. Florian Chauvin was flying to Wales to tell his daughter something important, but his plane fell out of the sky. In the aftermath of the crash, Helen discovers that one of the passengers doesn't seem to have a heart. What was Florian coming to tell Helen? Who was he travelling with? And why did his plane crash?

Tracks: Rachel Turner is looking for fossils with her four year-old son, Joe. But when a freak earthquake shakes the land beneath their feet, Joe vanishes. With the help of two locals, Rachel embarks on a desperate search to find her son. But as darkness descends, the secrets hidden in the ancient forests of the mountain are uncovered.