BBC's Wolf: What it's about, number of episodes, cast and where you've seen them before

The BBC is screening a new horror-thriller TV drama based on a series of novels. Wolf is described by its executive producer, writer and creator Megan Gallagher as a "proper thriller" with "massively high stakes and a hugely climatic finale".

The show is being aired on BBC One and BBC iPlayer, and is adapted from Mo Hayder's books about police detective Jack Caffery. The BBC describes Caffery as a "young detective beset by nightmares" who is obsessed with a neighbour he believes murdered his 10-year-old brother in the 1990s.

The series follows two storylines that don't collide until Wolf's conclusion. "The tone of the series is at times heightened and absurd, with large doses of dark humour, which I think audiences will find really thrilling," Gallagher has said.

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To find out more about Wolf's cast, its plot, how many episodes there are and when the show starts, read on below.

Ukweli Roach (The Midwich Cuckoos, Blindspot, Humans) plays the lead role of DI Jack Caffery. Also in the ensemble is Sacha Dhawan (Doctor Who, Marvel’s Iron Fist) who stars as Honey, Iwan Rheon (Game Of Thrones, Riviera) as Molina, mismatched professionals forced together on a job; Sian Reese-Williams (Hidden, Line Of Duty) as DI Maia Lincoln, a woman with a case to prove; Juliet Stevenson (Out Of Her Mind, Bend It Like Beckham) as Matilda Anchor-Ferrers, an intelligent yet neurotic housewife, and Owen Teale (Line Of Duty, Game Of Thrones) as Oliver Anchor-Ferrers, Matilda’s wealthy and well-connected husband.

The BBC's official synopsis of the show says: "DI Jack Caffery is a young detective beset by nightmares. Obsessed with the neighbour he