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1 hour, 30 minutes
First broadcast: on BBC One Northern IrelandLatest broadcast: on BBC One Yorkshire
A reclusive mathematician returns to England to attend his brother's funeral, finding a world much changed from the one he left, and is pulled into a spiral of strange events. Show more
1 hour, 30 minutes
First broadcast: on BBC One Northern IrelandLatest broadcast: on BBC One Yorkshire
Thriller series. A terrified Yasim confronts Stephen. Meanwhile Nye is out on the Afghan-Pakistan border investigating the site of Michael's death, and Russell drops a bombshell. Show more
1 hour, 30 minutes
First broadcast: on BBC One Northern IrelandLatest broadcast: on BBC One Scotland
Thriller series. Stephen and Yasim join forces with Russell to find out what killed Nadir, and discover a vaccine factory is linked to the murder of four leading biochemists. Show more
1 hour, 30 minutes
First broadcast: on BBC One Northern IrelandLatest broadcast: on BBC One Scotland
Stephen and Yasim are reunited with Michael, back from the dead. They agree to help him find the truth about the bad batch of Hepatitis B vaccine, but the police are on their tail. Show more
1 hour, 30 minutes
First broadcast: on BBC One Northern IrelandLatest broadcast: on BBC One Scotland
Thriller series. After the bomb blast at Brick Lane, Stephen, Yasim and Michael take refuge in the swamp, a place where the new underclass of people with no IDs bed down. Show more
