From TARDIS Index File, the free Doctor Who reference.

Doctor Who and the Power of Kroll
Series:	Doctor Who- Target Novelisation
Release Number:	49 (given to later editions)
Doctor:	Fourth Doctor
Companions:	Romana I, K-9
Enemy:	Kroll, Swampies
Setting:	Third moon of Delta Magna, Unknown
Author:	Terrance Dicks
Publisher:	Target Books, W.H. Allen & Co
Publication:	May 1980
Format:	Hardcover and paperback editions, 128 Pages
ISBN:	ISBN 0-426-20101-9
Previous Story:	Doctor Who and the Androids of Tara
Following Story:	Doctor Who and the Armageddon Factor

Novelisation

• This novelisation is based on the original television serial (DW): The Power of Kroll which was shown from 23rd December 1979 and written by Robert Holmes
• The cover and information shown on the right is for the original Target novel and featured the artwork of Andrew Skilleter. (See below for information on other UK and international editions which published with a different cover).

Publisher's 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

Illustrations

• None

Deviations from the Televised Story

To be added

Author, Writing and Publishing Notes

• Then producer John Nathan-Turner expressed the view that he thought the cover artwork poor. The image of Tom Baker on the original edition is taken from his expression after defeating Kroll and obtaining the fifth segment of the Key to Time in the original story.

Associated Images

To be added

Publishing History (UK)

To be added

First Publication:

• Hardback

W.H. Allen & Co. Ltd. UK

• Paperback

Target

Re-issues:

International Editions

To be added

External Sources

• The Target Book by David J Howe (Telos Publishing 2007)
• On Target a comprehensive guide to the Target novelisations by Tim Neal