Doctor Who and the Power of Kroll

In 1980, The Power of Kroll was released as a novelisation by Target Books under the title Doctor Who and the Power of Kroll.

Cover blurb
The huge, octopus-like Kroll lived deep in the swamps of the humid, steamy planet.

To the native swamp-warriors, Kroll was an angry, mythical god. To the money-grabbing alien technicians, Kroll was a threat to a profit-making scheme.

In their search for another segment of the Key to Time, the Doctor and Romana have to face the suspicion of the Lagoon dwellers, the stupidity of the technicians and, finally, the power of Kroll...

THE POWER OF KROLL is a novel in the Key To Time Sequence. Also available THE RIBOS OPERATION, THE STONES OF BLOOD and THE ANDROIDS OF TARA. Coming soon: THE ARMAGEDDON FACTOR