John TheydonJohn Theydon (real name John W. Jennison) was a prolific British author of fiction during the 1950s and 60s – he is thought to have written over 100 novels under various pseudonyms. Theydon authored six Thunderbirds novels in 1966 and 1967 having preiously written stories for Supercar and Stingray, and he would later write for Captain Scarlet and the Mysterons. Read More Read Less