WOLF Key Art by Sam Barker for the BBC

DI Jack Caffery is a young detective beset by nightmares. Obsessed with the neighbour he believes murdered his 10 year-old brother in the 90s, Jack finds himself trying to right the wrongs of others – but at what cost? Meanwhile, in Monmouthshire a wealthy isolated family finds themselves victimised, trapped and terrorised by someone’s cruel games.

Starring Ukweli Roach as DI Jack Caffey.