The Tardis crew take a holiday, but the Doctor encounters an enemy he thought long since dead.
A plan to build a nuclear power station in Cardiff City disguises an alien plot to rip the world apart.
And, when the Doctor dines with monsters, he discovers traps within traps.
The episode sees the return of Noel Clarke (Mickey) and Annette Badland.
Episode 11, Boom Town airs Saturday 4th June at 7pm on BBC1