Part 7 of the conspiracy thriller. Written by Timothy X Atack, starring Hattie Morahan and Jonathan Forbes.

When Helen and Freddy discover a bunker which holds the secret of ‘Patient Zero’, they must form an unlikely alliance to get inside.

A gripping thriller, chart topping podcast and winner of Best Sound (BBC Audio Drama Awards) and Best Fiction (British Podcast Awards), now Tracks is back with another 9 part headphone filling thrill-ride.

Helen…. Hattie Morahan

Freddy….. Jonathan ForbesAstrid…. Lea MornarAngelo…. Francois PandolfoMartinsen…. Simon Armstrong

Lead writer…. Matthew Broughton

Directed by James RobinsonA BBC Cymru Wales Production