Starring: Christopher Eccleston, Billie Piper

The past has broken through into the Powell Estate and not even the Doctor knows what's happening! As more and more historical figures appear, it's a race to figure out what's behind this, before the past becomes the present and all hell breaks loose...

Starring: Peter Davison

Story details to follow.

Starring: Colin Baker, Nicola Bryant, Mark Strickson

The Doctor and Peri and reunited with an old friend - or is he an enemy? Turlough insists he's changed since they last met. The trouble is, so has the Doctor, and he’s not inclined to trust his one-time companion...

Story details to follow.

Story details to follow.

Starring: Jon Culshaw, Jemma Redgrave, Ingrid Oliver, Sadie Miller, Christopher Naylor

UNIT. Humanity’s first and best line of defence against a hostile universe. No matter where. No matter when.

Starring: Eric Roberts, Charlie Russell, Tim Treloar

The Zygons have come to claim the Earth, and this time they're playing the long game. For the Black Cadre have a plan, a plan that will take exactly one hundred years to come to fruition...