Flung across space and time by the sorcery of super-science, John Gordon exchanges bodies with Zarth Arn, Prince of the Mid-Galactic Empire 2000 centuries in the future! Suddenly John is trust into a last-ditch battle between the democratic Empire World and the tyranny of the Black Cloud regime. Only one weapon - the terrifying Disruptor - can win the struggle for the Empire Forces. But it is so powerful that unless John uses it correctly it could destroy not only the enemy but the cosmos. Could his 20th Century mind cope with the technology of 200,000 years from now?

Scientists building the first United States moon base in 1966, discover some amazing ruins and a 30,000-year-old record.

Collection of two classic science fiction authors' signature stories:Two novels by Edmond Hamilton:The Star KingsReturn to the StarsThree novelettes by Leigh Brackett"Queen of the Martian Catacombs""Enchantress of Venus""Black Amazon of Mars"and a short story (the only formal collaboration between the authors):"Stark and the Star Kings"