The British government has created the Counter-Measures group, a specialist team that investigates strange phenomena and dangerous technology. This box set contains four of their adventures plus a behind-the-scenes documentary.

The universe stands on the brink of a dimensional crisis - and the Doctor and Raine are pulled into the very epicentre of it. Meanwhile, on Earth, UNIT scientific advisor Dr Elizabeth Klein and an incarnation of the Doctor she's never encountered before are tested to the limit by a series of bizarre, alien invasions. At the heart of it all is a terrible secret, almost as old as the Time Lords themselves.

Based on Nigel Fairs' 'murder mystery serial' that has been running for over 21 years (new episodes performed every month in country houses, steam trains, jailhouses, castles and restaurants throughout the UK), Shilling & Sixpence Investigate takes place in a sometimes quirky, sometimes dark world where nobody is quite whom they seem.

In the 22nd century, the Daleks have occupied planet Earth. By the 43rd century, only a handful of humans survive. Still further into the distant future, a Thal scientist must choose whether to betray his heritage - or see the universe destroyed. When the Doctor and Nyssa find themselves trapped in this deadly chain of events, they must decide who their real enemies are. What is certain is that no matter where the Doctor turns, the Daleks will be waiting for him. What could possibly be worse than that?

The continuing adventures of Henry Gordon Jago and George Litefoot, characters first introduced on television in Doctor Who: The Talons of Weng-Chiang (1977), who have become Infernal Investigators, solving mysteries involving paranormal or alien phenomena in 1880s London.

Four decades. Four cases. One solution. From the plains of Afghanistan to the alleyways of Victorian London, from the dark heart of the English countryside to the ruin of Europe after the Great War, join Sherlock Holmes and Dr John Watson in a quartet of astonishing new investigations which span their lifelong friendship and beyond....

The prehistoric Earth is dying. Thunderclouds roll across the skies, cloaking the land in darkness. The seas crash and boil as the rain turns to acid. The remnants of the Silurian race place themselves in suspended animation deep below the surface. One day they will awaken and reclaim their world.... The Tardis has landed on the Galapagos Islands, a desolate outcrop of rocks shrouded in mist and fear.

The Doctor, Susan, Ian and Barbara land on the planet Hydra, where Admiral Jonas Kaan leads a vast flotilla of ships trying to elude the vicious race that has invaded and occupied their world. But his ships are being picked off one by one, vessels and crews dragged underwater by an unseen foe. The time travellers find themselves pitched into battle against the Voord, the ruthless enemy they last encountered on the planet Marinus.

On a dark, frozen planet where no planet should be, in a doomed city with a sky of stone, the last denizens of Earth's long-lost twin will pay any price to survive, even if the laser scalpels cost them their love and hate and humanity. And in the mat-infested streets, around teatime, the Doctor and Nyssa unearth a black market in secondhand body parts and run the gauntlet of augmented police and their augmented horses.

Hurrah! The deadly Daleks are back! Yes, those loveable tinpot tyrants have another plan to invade our world. Maybe this time because they want to drill to the Earth's core. Or maybe because they just feel like it. And when those pesky pepperpots are in town, there is one thing you can be sure of. There will be nonstop, high-octane mayhem in store. And plenty of exterminations! But never fear. The Doctor is on hand to sort them out. Defender of the Earth, saviour of us all.

'Farewell, Great Macedon': The TARDIS materialises in the Hanging Gardens of Babylon, one of the Seven Ancient Wonders of the World, in the year 323 BC. The Doctor, Ian, Barbara and Susan meet Alexander the Great - but their excitement is tempered by the realization that these are the final days of Alexander's life. As the travellers become embroiled in the tragic events, the inevitability of history unfolds around them. But can they - and should they - change it?

The Doctor and Romana are enjoying a leisurely lifestyle as the Lord and Lady of a London townhouse. But trouble never stays away from them for long, and before they know it a chance discovery of alien technology leads them deep into the heart of the English countryside, where a malign presence lurks. As the Doctor dodges deadly butlers and ferocious gamekeepers, Romana is faced with a malevolent aunt and an even deadlier peril - marriage. Directed by Ken Bentley.

An epic adventure uniting the Doctor's friends across time and space, featuring Jago & Litefoot, Counter-Measures, the Vault and Gallifrey!

Britain. The height of the Roman occupation. The Doctor has brought Leela to ancient Norfolk to learn about her ancestors...but has no idea how much of an education she is going to get. Because this is the time of Boudica's rebellion. When the tribe of the Iceni rises up and attempts to overthrow the Roman masters. As Leela begins to be swayed by the warrior queen's words, the Doctor has to make a decision: save his friend...or save history itself?

When a test flight of the new Kith Sunstorm ends in disaster, the Sirius Exhibition Station is plunged into a web of murder and intrigue. Someone - or something - is trying to reignite a war between the Varlon Empire and the Kith Oligarchy. As the fate of the galaxy hangs in the balance, only two investigators, the Doctor and Lucie, can hope to uncover the truth. So strap yourself in, engage thrust, and prepare for...Max Warp!