In The Planet Killers, the Security Computers of Earth Central determine that the frontier world of Lurion will launch an all-out attack on Earth in 67 years, sending Agent Roy Gardner to the rough-and-tumble planet to ensure that doesn't happen - even if it means blowing Lurion to interstellar dust! In The Plot Against Earth, agent Lloyd Catton must work with skeptical, suspicious alien agents to bust a hypnojewel racket, unveiling a multi-planet conspiracy threatening the Earth itself! In One of Our Asteroids is Missing, independent miner John Storm discovers an impossible asteroid rich with fabulously valuable metals and minerals, only to find his claim stolen, along with all computer records indicating that he had ever existed! Never before reprinted since their original appearances and with a new introduction by the author, these three novels of science fiction adventure blaze back onto the scene, revealing early masterworks of one of the genre's most gifted and celebrated storytellers!