Two RAF fighter jets are on a training flight over Northeast Scotland when one of them is plucked from the air and promptly disappears. UNIT are called in, and the Doctor and Brigadier Lethbridge-Stewart are soon on the scene. They enlist the help of a local military officer - a young lieutenant by the name of Mike Yates. The Doctor discovers a link to the recumbent stone circles that are plentiful in this part of Scotland. The stones are thousands of years old and are soon revealed to hold a terrible secret.

Following an emergency landing, the Tardis arrives on a remote world orbiting a peculiar star - a pulsar which exerts an enormous gravitational force, strong enough to warp time. On further exploration the Doctor and his friends, Jamie and Zoe, discover a human outpost on the planet surface, inhabited by scientists who are there to study an ancient city. The city is apparently abandoned, but the scientists are at a loss to explain what happened to its sophisticated alien architects.

Responding to a desperate summons from the Doctor's future self, he and Peri find themselves on a sailing ship in 1492, where the crewmen are gripped by superstitious fear. They say the Devil walks among them, stalking and striking them down. Even though they have landed in paradise, they fear that 'El Diablo' himself will drag them over the edge of the world and into the depths of Hell.

In the far future, the inhabitants of Tarsus Six face a desperate struggle to evacuate their world before their sun, Tarsus Ultra, collapses into a cataclysmic spatial anomaly. When the Doctor navigates the Tardis to a space station orbiting Tarsus Six, Ace assumes that he intends offer their assistance. But it soon becomes clear that the Doctor has an agenda of his own. With the Tardis immobilised, Ace realises that their own lives are as much in danger as those of the fleeing inhabitants.

The Doctor answers a psionic distress call being sent from England in the 1920s. There, in the environs of a fairground, he is reunited with an old friend: Harry Houdini. To Adric and Nyssa the name means very little, but to the Doctor's companion, Tegan, he is a legend. An escape artist extraordinaire, Houdini's reputation will last for decades. But how does Harry knows so much about Tegan?

The violent, volcanic world of Hephastos is home to a colony of composers, painters, authors and poets, all striving to create the greatest works of art the universe has ever seen. But in pursuit of their goal, artistic collaboration has been taken a stage too far.... When the Doctor and Romana arrive, they discover the colonists have neglected their well-being and their once beautiful habitat, which has now succumbed to decay, and they are enslaved to the Babble network which occupies their every waking moment.

The Doctor and Leela find themselves in the middle of London at the time of a new energy crisis. The GlobeSphere Corporation seems to have all the answers - but several thousand protestors beg to differ. What is the connection between the National Gallery and a base on the moon? Has radical thinker Damien Stephens simply sold out, or does he have a more sinister agenda?

Zagreus sits inside your head. Zagreus lives among the dead. Zagreus sees you in your bed and eats you when you're sleeping....

Tracking a nexus point in time, the Doctor meets Dr. Evelyn Smythe, a history lecturer whose own history seems to be rapidly vanishing. The Doctor must travel back to Tudor times to stabilise the nexus and save Evelyn's life. But there he meets the Queen of England and uses all his skills of diplomacy to avoid ending up on the headman's block.... Written by: Jacqueline Rayner. Directed by: Gary Russell.

It's 1812, and the Doctor, Steven and Dodo get ready to spend their winter in a Russian village. The French are on their way, but that's not the only invasion the travellers will have to deal with. Written by: Marc Platt. Directed by: Nigel Fairs.

The library on Kar-Charrat is one of the wonders of the universe. It is also hidden from all but a few select species. The Doctor and Ace discover that the librarians have found a new way of storing data - a wetworks facility - but the machine has attracted unwanted attention, and the Doctor soon finds himself pitted against his oldest and deadliest enemies - the Daleks! Written by: Mike Tucker. Directed by: Nicholas Briggs.

Responding to multiple maydays, the TARDIS lands on the planet of Death’s Deal, but the distress calls are old, the final echoes of terrified lost souls. This is an exotic world of lethal creatures, nicknamed The Deadliest Planet in the Galaxy, and only the brave, foolhardy or greedy would ever dare to visit. Finding themselves stranded among a motley bunch of space tourists, the Doctor and Donna must lead a struggle for survival against the frenzied wildlife as they slowly realise that other members of the group have very different agendas.

The Doctor, Romana and newly elected President Sheridan Moorkurk take on the all-consuming powers of business tycoon Cuthbert and his vast Conglomerate. But the situation goes beyond a struggle for political power. Cuthbert is intent on revenge on creatures he feels have attacked his interests. But when his revenge looks like it's leading to interspecies war, the Doctor knows the stakes couldn't be higher. The Laan are on the move. Is it too late to prevent the destruction of all life on Earth?

Twenty-third November 2013. In an Oxford laboratory, graduate Alice Watson helps Professor Chivers assemble the final pieces of an impossible machine. A time machine. The scientist and his assistant believe they are making history, little suspecting that the project's completion will threaten the existence of the entire universe. But someone has sensed the danger, and when the mysterious Doctor arrives, Alice is taken on a desperate race from libraries and dreaming spires all the way to the nightmare world of Earth's future.

In the renovated docklands of South East London, on the bank of the river Thames, the doors of the Dusk are open for business. Bets are called, cards are dealt and roulette wheels spun. As fortunes are won and lost, an inhuman killer stalks the local avenues and alleyways - a killer with a taste for human flesh. Is there more to casino owner Reggie 'The Gent' Mead or is he just a common gangster? What secrets are hidden in the bowels of the Dusk?