YA author Patrick Ness is to write and executively produce an eight-part Doctor Who spin-off series, set to air in 2016.
Class, Ness’ first TV series for the BBC, will be about growing up in modern Britain, but with Monsters.
The series will be produced by BBC Cymru Wales in association with BBC Worldwide for BBC, and the other executive producers will be Steven Moffatt, who is the story runner for the Doctor Who series, and Brian Minchin.
“No one has documented the dark and exhilarating world of the teenager like Patrick Ness, and now we're bringing his brilliant story-telling into Doctor Who,” said Moffat.
Ness added: “I'm astounded and thrilled to be entering the Doctor Who universe, which is as vast as time and space itself. There's so much room there for all kinds of amazing stories, and to work with Steven Moffat and Brian Minchin to find a place to tell one of my own has been an absolute joy.
“I can't wait for people to meet the heroes of Class, to meet the all-new villains and aliens, to remember that the horrors of the darkest corners of existence are just about on par with having to pass your A-Levels."
The series will film in and around Wales from spring and be on air some time next year.
Ness’ latest YA novel, The Rest of Us Just Live Here, was published by Walker Books in August.