Bloodlands (2021)

A cold case where the old wounds are political. In present-day Northern Ireland, James Nesbitt's DCI Tom Brannick links a kidnapping to Goliath, a killer whose four victims from both sides of the divide vanished in 1998, weeks before the Good Friday Agreement. One of those victims was Brannick's own wife, whose body was never found, so the investigation is as much about grief as about evidence. Series one is a tight four episodes; the six-episode second series in 2022 is more far-fetched. Jed Mercurio produces, and it has his knack for cliffhangers.