Tom Baker's arrival at Big Finish was a great moment that finally brought all the classic Doctors into the fold. The Fourth Doctor now has his own range of stories - Doctor Who - The Fourth Doctor Adventures - while he's also made appearances in not only our 50th anniversary celebration Doctor Who - The Light at the End, but several special projects adapting popular Doctor Who novels written in those dark times when nobody was sure the Doctor would return to the TV...

Today we mark Tom's 2011 presence in our Doctor Who - The Lost Stories range, by putting Doctor Who - The Fourth Doctor Box Set at a special offer price of £25 on Download or CD (plus relevant postage) for the weekend (ending Monday morning, UK time). Join the Doctor and Leela for two tales originally intended for TV production:

The Foe from the Future

The Grange is haunted, so they say. This stately home in the depths of Devon has been the site of many an apparition. And now people are turning up dead. The ghosts are wild in the forest. But the Doctor doesn’t believe in ghosts.

The TARDIS follows a twist in the vortex to the village of Staffham in 1977 and discovers something is very wrong with time. But spectral highwaymen and cavaliers are the least of the Doctor’s worries.

For the Grange is owned by the sinister Jalnik, and Jalnik has a scheme two thousand years in the making. Only the Doctor and Leela stand between him and the destruction of history itself. It’s the biggest adventure of their lives – but do they have the time?

The Valley of Death

A century after his Great-Grandfather Cornelius vanished in the Amazon rainforest, Edward Perkins is journeying to the depths of the jungle to find out what became of his ancestor’s lost expedition. Intrigued by what appears to be a description of a crashed spacecraft in the diaries of that first voyage, the Doctor and Leela join him on his quest. But when their plane runs into trouble and ends up crash landing, everyone gets more than they bargained for.

The jungle is filled with giant creatures and angry tribesmen, all ready to attack. But in the famed lost city of the Maygor tribe, something far, far worse is lurking. Something with an offer to make to mankind. Who are the Lurons and can they be trusted? Will the Doctor defeat the plans of the malevolent Godrin or will he become just another victim of the legendary Valley of Death?

And bringing things right up to date, today we premiere the first episode of Doctor Who - The Highest Science as a free download, the first Big Finish production recreating Gareth Roberts' imaginative take on Doctor Who as an audio story, and the first ahead of next year's run of Big Finish adaptations of Gareth's works:

The Highest Science. The pinnacle of knowledge and a terrible weapon. A legend – nothing more.

Sheldukher. The most wanted criminal in the galaxy. Evil to the core and hungry for power, whatever the cost.

The Chelonians. A vast military power, pledged to eradicate human parasites wherever they are found.

The Doctor. An ancient and wise Time Lord tracking a temporal fluctuation that endangers the universe itself.

Some things should never meet, but as Professor Summerfield is about to discover, the universe is full of coincidences.

Download and listen to the first part of Doctor Who - The Highest Science at the link here. To pre-order this December release, simply visit the page here. Details of our other Gareth Roberts novel adaptations, including pre-orders and trailers for the gorgeous limited edition sets, can be found here.