The existence of the Queen's Investigator is a state secret.When his voice blasts, "Shut up, Prime Minister!" the P.M. does just that. For Keys, the man who takes orders direct- and in private- only from the reigning monarch, has the last word. The Q.I. is the hereditary head of the real Secret Service. His job? To protect the realm. The tools of his trade are money, sex and violence. His present assignment is to find and disarm Doomsday, a monster cobalt bomb which has been planted somewhere in England by the Russians.
To be clear - this is pulp fiction and it has not aged well. The book has some extremely politically incorrect language and some of the plot suggests that the author was not too concerned about realism - to put it mildly! However, I must admit I quite enjoyed the book - it is basically a sub-James Bond thriller with a main character who works for the British secret service. I bought it for pennies in a charity shop, and it was an amusing read, once I came to terms with the dated language and attitudes. If nothing else it had a good sense of England in the 1960s, which was when it was published.