BBC America has introduced the cast of Doctor Who's "teen" spin-off series, Class, a Young Adult series set in contemporary London.
Greg Austin, Fady Elsayed, Sophie Hopkins and Vivian Oparah have entered the Whoniverse and they will be joined by Katherine Kelly, as she takes the role of a teacher at Coal Hill School.
Its executive producers are Patrick Ness and Doctor Who executive producers Steven Moffat and Brian Minchin.
The series is being compared to Buffy the Vampire Slayer and The Hunger Games as it deals with what are described as "incredible dangers [that] are breaking through the walls of time and space."