The first in a major new nine-part conspiracy thriller, starring Romola Garai. Written by Matthew Broughton. 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. What was Florian coming to tell Helen? Who was he travelling with? And why did his plane crash? Tracks: A story in nine parts about life, death and the human brain. Original music by Stu Barker Directed in Wales by James Robinson.