Citadels on Earth, Volume 12

An ancient civilization, whose primary objective is the making of war, descends upon the planet earth. In order to save his home from total destruction, Flash Gordon returns to earth only to find himself arrested for murder...and treason. As the people of his planet divide into factions, Flash must maneuver to save the earth from total annihilation.

Ron Goulart (b 1933)

Aka Kenneth Robeson, Frank S. Shawn, Joseph Silva, Con Steffanson

Ron Goulart is a professional author having worked over several decades and has over 180 books to his credit, including more than 50 science fiction novels and over 20 mysteries. He's received two Edgar Award nominations and is considered one of the country's leading authorities on comic books and comic strips, as shown in his 2000 book, Comic Book Culture. Ron lives with his wife, Frances, also a writer, in Connecticut.