The Doctor arrives on Space Station Nerva in its distant past to find its crew threatened by a mysterious plague. Discovering that things are not as they seem, the Doctor stumbles upon a Cybermen created plan to commit genocide.

A newly regenerated Doctor joins UNIT in an investigation into the theft of top secret plans and equipment from supposedly secure premises. Sarah discovers that the raids have been carried out by a robot invented by scientist Professor Kettlewell while he was working for Think Tank, a body involved in developing emerging technologies.

The Doctor retreats to Titan 3.

The Doctor is involved in a kidnapping scheme.

The series travels around the country staging a free antiques valuation day for people to attend with treasured objects and family heirlooms; the most interesting are selected for filming by a team of specialists considered the best in their field.

The TARDIS lands aboard an ark bound for a 700-year journey to a new planet.

As the newly regenerated Doctor drifts in and out of consciousness, Christmas becomes a time of terror on planet Earth with the whole of mankind falling under the shadow of the sinister alien Sycorax.

A bride mysteriously vanishes as she prepares to marry her boyfriend.

The Doctor tries to save the lives of the passengers on an orbiting cruise ship called Titanic.

The Doctor meets a strange man in Victorian England called The Doctor.

The Doctor's nemesis is reborn and seeks to recast Earth in his image; the Time Lords attempt to return and re-establish Gallifrey.

Creatures attack The Doctor and Clara while they are trapped on an Arctic base, and they receive help from a surprising source.

While hiding from Christmas festivities on a remote human colony, the Doctor is recruited to help River Song.

The Doctor, a journalist and a superhero team up to save New York City.

The Doctor, refusing to face regeneration, teams up with his former self, a British army captain, and Bill Potts for an adventure.

In order to save Amy and Rory, who are trapped on a crashing space liner, The Doctor must save the soul of a lonely miser.

After being evacuated to an old house in Dorset, a woman and her children encounter the Doctor.

Though saddened by the loss of his companions, the Doctor helps a young governess battle a frosty menace.

The Doctor makes sacrifices to save a town called Christmas.