Chi Girl

In a Mars base, the inhabitants are being infected by a mysterious water creature which takes over its victims. The Doctor is thrust into the middle of this catastrophe, knowing a larger one is waiting around the corner.

Tommy Jarvis, tormented by the fear that maybe Jason isn't really dead, unwittingly resurrects the mass murderer for another bloody rampage.

A meeting in a London bus with jewel thief Lady Christina takes a turn for the worse for the Doctor when the bus takes a detour to a desert-like planet, where the deadly Swarm awaits.

The newly-regenerated Doctor arrives in Victorian London, and Clara Oswald struggles to embrace the man he has become. All the while, they reunite with the Paternoster Gang to investigate a series of combustions that have been occurring all around the city.

Energetic priest Don Camillo returns to the town of Brescello for more political and personal duels with Communist mayor Peppone.

Amy Pond and Rory Williams are trapped on a crashing space liner, and the only way the Eleventh Doctor can rescue them is to save the soul of a lonely old miser. But is Kazran Sardick, the richest man in Sardicktown, beyond redemption? And what is lurking in the fogs of Christmas Eve?

The Doctor arrives in Victorian London. It's Christmas, but snow isn't the only thing descending on the tranquil and jubilant civilization, as familiar silver giants from an alternate reality are amassing in numbers. The Cybermen are on the move again, and the only beings who can stop them are the Doctor and... another Doctor?

Jesse becomes reunited with Willy three years after the whale's jump to freedom as the teenager tries to rescue the killer whale and other orcas from an oil spill.