Erroll Collins (pseudonym of Ellen Edith Hannah Redknap, 15 April 1906 – 11 March 1991)[1] was a British writer active during the 1940s, specialising in adventure and science fiction for boys.

She had a very broad general knowledge and read a great deal, after she died one room was almost impossible to enter due to there being more than two thousand books packed floor to ceiling.

Nonetheless, Collins correctly anticipates that the world's major trouble-spots at the millennium would be in the Middle East (she posits a dispute between Europe and Asia over the territorial rights to the Caspian Sea).

In the Interplanetary War which forms the climax to the story, Earth is victorious largely due to the population uniting against their common enemies from Mars and Venus.

Other books include Submarine City, The Black Dwarf of Mongolia, Outlaw Squadron, The Hawk of Aurania, Volcanic Treasure Rebel Wings, The Secret of Rosmerstrand and The Sea Falcon.

During the Second World War one of her books was refused printing permission by the Censors on the grounds of National Security, perhaps the fiction was a little to close to reality of things being secretly developed.

In this novel, described by the publisher as a prophetic, thrilling, ominous tale of modern warfare, the Nazis develop an under-water base from which submarines and troop carriers fitted onto tractors prepare for a sea-bed invasion of Britain.