Hugh Bonneville and Janet McTeer return as Detective Superintendent Barclay and Detective Sergeant Amy Foster, as they reprise their Five Days roles in this new, two-part thriller, written by Mick Ford.

When extremists kidnap two seven-year-old boys from very different backgrounds, and promise to release them only if their radical demands are met, the case falls into the hands of the intuitive and pragmatic Detective Superintendent Iain Barclay.

Faced with a relatively inexperienced and increasingly unreliable team, Barclay calls his friend and faithful deputy, Detective Sergeant Amy Foster, out of “early retirement”, and away from the bottle, to support him in solving what turns out to be a highly sensitive crime.

With her assertive and pragmatic attitude, Foster isn’t afraid to ruffle a few feathers to get the job done. She begins to whip the team into shape to start piecing together the details of the abductions.

Emails which have also been sent to the national media, arrive at Barclay’s office, with images attached of the two boys seemingly unconscious. The word “sacred” has been written on their bodies. The photos have been sent from untraceable mobile phones hundreds of miles apart, suggesting there is a network of people involved.

The following morning a package containing the boys’ clothing is delivered to BBC Birmingham, and the fanatics’ demand is finally revealed: broadcast film of their cause on national news bulletins, or the boys will be killed.

With children’s lives at risk, the boys’ families demanding answers and with no leads, the detectives are faced with a complicated moral dilemma for which there is no easy or comfortable solution.

Sunday 18 January & Monday 19th January
9.00-10.00pm BBC ONE