The BBC Press Office has confirmed the synopsis for Neil Gaiman's Doctor Who episode; '7.12: Nightmare In Silver'.

712: Nightmare in Silver
By Neil Gaiman

Hedgewick’s World of Wonders was once the greatest theme park in the galaxy, but it’s now the dilapidated home to a shabby showman, a chess-playing dwarf and a dysfunctional army platoon.

When the Doctor, Clara, Artie and Angie arrive, the last thing they expect is the re-emergence of one of the Doctor’s oldest foes. The Cybermen are back!

[Source: BBC Press Office]