BBC One crime drama Wolf starring Game of Thrones star Iwan Rheon and Doctor Who’s Sacha Dhawan tells a gripping tale.

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The drama revolves DI Jack Caffery, who becomes obsessed with proving that his neighbour murdered his 10-year-old brother in the ‘90s.

Meanwhile, in a separate storyline, wealthy family, the Anchor-Ferrers, find themselves the victims of a psychopath’s cruel games.

When the two storylines collide, a thrilling and disturbing race against time ensues, leading to a dramatic finale.

The series may, on its surface, be a detective drama, but it is also so much more, and blends genres including thriller, horror, crime and even some comedy.

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But is the series a wholly original story, or is it based on a book? Read on for everything you need to know about the basis for the BBC series Wolf.

Is Wolf based on a book?

Wolf
Wolf. BBC

Yes, Wolf is based on the book of the same name by Mo Hayder, which was released in 2014.

Wolf was the last novel of Mo Hayder's released before her death in 2021. One more novel of Hayder's has since been released in 2022, published under the pseudonym Theo Clare. Another Theo Clare novel is expected this year, but neither of these are related to or in the same series as Wolf.

Are there more novels in the Jack Caffery series?

Jack Caffrey (Ukweli Roach) in Wolf
Jack Caffrey (Ukweli Roach) in Wolf. BBC/Hartswood Films Ltd/James Pardon

There are, but because Wolf is the last novel in the Jack Caffery series, all of them precede the story told in the BBC series.

There are six other novels in the Jack Caffery series, with the first having been released in 2000.

You can find the full list of Jack Caffery novels by Mo Hayder here:

  1. Birdman (2000)
  2. The Treatment (2001)
  3. Ritual (2008)
  4. Skin (2009)
  5. Gone (2010)
  6. Poppet (2013)
  7. Wolf (2014)

Will another of the Jack Caffery novels be adapted for Wolf season 2?

Jack Caffrey (Ukweli Roach) in Wolf, leaning on some railings
Jack Caffrey (Ukweli Roach) in Wolf. BBC/Hartswood Films Ltd/James Pardon

At this point no announcement has been made regarding the future of Wolf beyond this first season.

If a second season were to be confirmed, it is unclear at this time whether it would tell a brand-new story from writer and creator Megan Gallagher or whether it would adapt one of Mo Hayder's previous novels and edit the chronology so it fits in after Wolf.

Gallagher previously said that it's "not often you’re handed a world like the one Mo Hayder built" and that "getting to play around in what she created has genuinely been the highlight of my career". Does that means she'd be interested in coming back for a second season?

For now we will just have to wait and see whether there is more from Ukweli Roach's Jack Caffery on the cards.

Wolf is available to stream in full now on BBC iPlayer. Looking for something else to watch? Visit our TV Guide and Streaming Guide or take a look at the rest of our Drama coverage.

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