|Edition: ||UK (hardback)|
|Released: ||May 1980|
|Publisher: ||WH Allen|
No blurb on back cover. The inside cover flaps read as follows:
Enormous, terrifying and ever-hungry, the monstrous octopus-like Kroll rises from beneath the Lagoon. To Kroll all life is food...
The Doctor and Romana are faced with savage swamp-warriors, power-hungry technicians and finally the towering menace of Kroll, in their search for another segment of the Key to Time.
Terrance Dicks was born in 1935 and educated at East Ham Grammar School and Downing College, Cambridge.
After a spell in advertising the author became a full-time scriptwriter, first for radio, then television where for five years he was Script Editor of the 'Doctor Who' series. He is now a freelance author and writes many of the highly successful 'Doctor Who' books.
Terrance Dicks lives in Hampstead, London, is married, and has three children.