Doctor Who and the Invisible Enemy

John Leeson stars in this exciting novelisation of a classic adventure for the Fourth Doctor - and the introduction of K9.

A mysterious cloud drifts menacingly through space, and the Doctor becomes infected with the Nucleus of a malignant Virus that threatens to destroy his mind. Meanwhile, on Titan, human slaves prepare the Hive from which the Virus will swarm out and infect the universe. In search of a cure, Leela takes the Doctor to the Bi-Al Foundation, where they make an incredible journey into the Doctor’s brain in an attempt to destroy the Nucleus.

Can the Doctor free himself from the Nucleus in time to reach Titan and destroy the Hive? Luckily he has help — in the strangely dog-like shape of a mobile computer called K9…

John Leeson, who was the Voice of K9 in the TV series, reads this unabridged novelisation of the 1977 television serial.

Terrance Dicks (Author)
Terrance Dicks became Script Editor of Doctor Who in 1968, co-writing Patrick Troughton’s classic final serial, The War Games, and editing the show throughout the entire Jon Pertwee era to 1974. He wrote many iconic episodes and serials for the show after, including Tom Baker's first episode as the Fourth Doctor, Robot; Horror at Fang Rock in 1977; State of Decay in 1980; and the 20th anniversary special, The Five Doctors in 1983. Terrance novelised over sixty of the original Doctor Who stories for Target books, including classics like Doctor Who and the Abominable Snowmen and Doctor Who and the Auton Invasion, inspiring a generation of children to become readers and writers. He died in August 2019, only weeks before the publication of his final Doctor Who short story, ‘Save Yourself’, in The Target Storybook.

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