John Creasey (September 17, 1908 - June 9, 1973) was born in Southfields, Surrey, England and died in New Hall, Bodenham, Salisbury Wiltshire, England. He was the seventh of nine children in a working class home. He became an English author of crime thrillers, published in excess of 600 books under 20+ different pseudonyms. He invented many famous characters who would appear in a whole series of novels. Probably the most famous of these is Gideon of Scotland Yard, the basis for the television program Gideon's Way but others include Department Z, Dr. Palfrey, The Toff, Inspector Roger West, and The Baron (which was also made into a television series). In 1962, Creasey won an Edgar Award for Best Novel, from the Mystery Writers of America, for Gideon's Fire, written under the pen name J. J. Marric. And in 1969 he was given the MWA's highest honor, the Grand Master Award.
Imagine how this tale of a Nazi invasion of England struck readers in 1940: Intrepid British agents infiltrate native born fifth columnists preparing the Germany invasion. Now put yourself in the place of English readers who suffer from Nazi bomb attacks, which are part of the plot!
The story is a preposterous, really, but to say why would be to spoil it. If you can accept such an elaborate conspiracy and just go with it, then the story is sensationally and marvelously told after the first 30 pages. This is the fourth book of a series, and John Creasey, originally writing under the name Norman Dean, does not bother to fill us in on who all these people are and why they do the things they do. It becomes clearer after the fourth chapter and eventually clear, but I nearly gave up before that point. Stick with this book for what they call a rattling good yarn.