By Katherine Chandler. Part 6 of the conspiracy thriller's final series. An odd detail on the uniform of a drowned soldier leads Helen further down the rabbit hole. At a military base in North Wales she finds a new companion and a warehouse full of secrets. A gripping thriller, Tracks was the first drama to hit the top of the iTunes podcast chart back in 2017. It went on to win Best Sound (BBC Audio Drama Awards) and Best Fiction (British Podcast Awards). Now Tracks is back with a fifth and final 9 part series. All four previous series of Tracks are available now in full on BBC Sounds. Helen… Olivia Poulet Freddy…. Jonathan Forbes Tec…. Dino Kelly Linda... Maria Pride Irene… Heather Craney The Assistant...Tom Mumford Frances… Juno Robinson Series created by Matthew Broughton Directed by John Norton A BBC Cymru Wales Production