Trapped with an Earth expedition, the mysterious Ood, and within the orbit of a Black Hole, the time travellers face an even greater danger from something ancient beneath the planet's surface.

An ordinary man obsessed with the Doctor joins a group of like-minded citizens in the hope of meeting the Time Lord in person. However, one of their members has a sinister motive.

Ghostly beings have been regularly appearing across the world. People, believing them to be their dead loved ones, are welcoming their visits with open arms.

No sooner than the Doctor has said a tear-stained farewell to Rose Tyler than he finds himself face-to-face with a woman dressed in a wedding frock. Who is she? And how did she get onboard the TARDIS?

For Martha's first trip in the TARDIS, the Doctor takes her back in time to Elizabethan England. There they find William Shakespeare under the control of deadly witch-like creatures.

The TARDIS lands in 1930s New York, at the height of the Great Depression. People are disappearing off the streets, and the Doctor's oldest enemies are at work preparing their most audacious plan yet.

Martha discovers that her family is caught up in the scheming of Professor Lazarus and his Genetic Manipulation Device. It becomes a fight for survival as human DNA twists into a monstrous form.

It's 1913 in England, and schoolteacher John Smith dreams of time, space and a blue box. But when lights in the sky herald something terrible, Smith's maid has to convince him that he can save the world.

In an old, abandoned house, the Weeping Angels wait. However, when people start disappearing, a young woman called Sally finds cryptic messages bleeding through from 1969.

Harold Saxon becomes Prime Minister and his reign of terror begins. This is only the start of his ambitions, however, as he announces humankind's first contact with an alien race, the Toclafane.