Clive (Frederick William) Egleton was a British author of spy novels.
He enlisted in the Royal Armoured Corps in 1945 to train as a tank driver while still underage. He was subsequently commissioned into the South Staffordshire Regiment for whom he served in India, Hong Kong, Germany, Egypt, Cyprus, The Persian Gulf and East Africa. He retired in 1975 with the rank of Lieutenant Colonel.
His novel Seven Days to a Killing was filmed as The Black Windmill, starring Michael Caine. Escape to Athena is a novelization of the 1979 movie of the same name.
See Frank Denton's review of this much underrated thriller writer in 'Twentieth Century Crime & Mystery Writers' at http://tinyurl.com/y9z9689k A good quick read requiring some attention to follow the characters.