Summary:

The Doctor finds his TARDIS colliding with a spaceship based on the RMS Titanic during a Christmas party. With the help of a waitress named Astrid, the Doctor must take on the race called the Hosts as the lives of the Titanic crew and those on Earth are in danger.

Summary:

With a new weight-loss pill tested in London by Adipose Industries, The Doctor goes to investigate the sinister truth behind the product, only to find out that his old friend Donna Noble is investigating as well.

Summary:

The Doctor and Donna visit Pompeii in AD 79, on the eve of the eruption of Mount Vesuvius.

Summary:

Finding themselves on the Ood-Sphere planet in the 42nd century, The Doctor and Donna discover the truth over the Ood's willingness to serve humankind.

Summary:

UNIT's newest recruit Martha Jones enlists The Doctor's help to investigate kid genius Luke Rattigan and his ATMOS system that is used in every car on Earth.

Summary:

With planet Earth choking under the poison sky, the Doctor must stop the Sontarans' threat to the planet.

Summary:

Caught in the middle of a war between the Humans and the Hath in the planet Messaline, the Doctor finds himself once again a father.

Summary:

With a 1920s dinner party turning into a murder mystery, The Doctor and Donna meet Agatha Christie on the eve of her publicized disappearance.

Summary:

The Doctor and Donna join a group of archaeologists at a 51st century library. What caused the library to become abandoned? What are the Nodes? And what links the library to one little girl? All they have is one warning - count the shadows.

Summary:

With the library darkening, the Doctor takes on the Vashta Nerada while figuring out what links River Song to his future. Meanwhile, Donna finds out the mystery of Dr. Moon and the Girl.