Feature-length episode to celebrate the 20th anniversary of the long-running sci-fi series. All five Doctors (Peter Davison, Patrick Troughton, Jon Pertwee, Richard Hurndall and Tom Baker) and many of their old companions are taken out of time and deposited in the Death Zone on Gallifrey. There they must battle not only the Master, but Daleks, Cybermen and Yeti in order to reach the Dark Tower and discover the Tomb of Rassilon. This special edition includes new special effects and extra footage not included in the original broadcast.

Caroline John reads this thrilling novelization of a classic Doctor Who adventure.

"Inferno" is the name of a top-secret drilling project to penetrate the Earth s crust and release a major new energy source.

A crisis develops when a noxious green liquid leaks out as drilling progresses the green poison has a grotesquely debilitating effect on human beings.

As the Earth s plight worsens, the Doctor is trapped in a parallel world, unable to rescue the planet and its inhabitants from the destructive force of Inferno

Caroline John, who played Liz Shaw in the original "Doctor Who "TV serial, reads Terrance Dicks complete and unabridged novelization, first published by Target Books in 1984."