The Twelfth Doctor and Clara Oswald take a Tardis trip into all-new adventures! First, they battle an enemy who can slide between the cracks of the universe and take over unwilling human hosts - the Fractures! Then, it's a hard-fought battle against an alien invasion in 60s Las Vegas - forcing the pair to team up with local gangsters...in Gangland! Plus...what dark threat is rising, with the Doctor in its sights?