Tracks: Series 1 and 2: Two BBC Radio 4 full-cast thrillers

Tracks

A major conspiracy thriller about life, death and the human brain, starring Romola Garai.

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?

The first series of Tracks became the most successful drama series launched by Radio 4 in 2016.

Tracks: Strata

A prequel to the first series, Series 2 is set 36 years before the events that rocked the life of Helen Ash. It explores the roots of a conspiracy that is set to envelop the world.

Snowdonia, 1980. It's the dawn of a new decade and the future is coming. But in the wilds of Snowdonia, the ancient history of the landscape is hard to escape.

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.

Cast of Tracks
Helen amp;mdash; Romola Garai
Freddy amp;mdash; Jonathan Forbes
Michael amp;mdash; Alex Beckett
Rosie amp;mdash; Susan Jameson
Florian amp;mdash; Sean Baker
K amp;mdash; Rafay Asfi
Fisker Lee amp;mdash; Kenneth Cranham
Other parts played by Suzanne Packer, Richard Nichols, Caroline Berry, Alexandria Riley, Matthew Gravelle, Claire Cage, Richard Mitchley, Pauline McLynn, Paul Courtenay Hyu, Leo Wan, Ruth Lloyd, Tristan Sturrock, Jaimi Barbakoff, John Norton, Paul Copley, Rhodri Meilir, Sam Rix, Nabil Elouahabi, Liz Sutherland and Matilda le Fleming.

Written by Matthew Broughton
Directed by James Robinson, Helen Perry and Abigail le Fleming.
Original music by Stu Barker
A BBC Cymru Wales Production

Cast of Tracks: Strata
Rachel amp;mdash; Fiona O'Shaughnessy
Ifan amp;mdash; Kai Owen
Sam amp;mdash; Robert Pugh
Afa amp;mdash; Betsan Llwyd
Charlotte amp;mdash; Shelly Rees
Ronny amp;mdash; Dafydd Emyr

Written by Matthew Broughton
Directed by James Robinson
A BBC Cymru Wales Production