Not long after the colonists landed on the uninhabited planet, every human-made artifact -- ship, communicators, tools -- disappeared! Even their clothes!
The last enemy was the toughest of all--and conquering him was in itself almost as dangerous as not conquering. For a strange pattern of beliefs can make assassination an honorable profession!
When a super-robot discovers how to build his own superbombs, it becomes obvious that Earth is by no means the safest place for him to be. Dr. Fitzhugh, his designer, and Leda Crannon, a child psychologist acting as Snookums' nursemaid, agree to set up Operation Brainchild, a plan to transport the robot to a far distant planet. Mike the Angel Gabriel, Power Design has devised the power plant that is to propel the space ship Branchell to its secret destination, complete with its unusual cargo.
Nelson and Ramos sped on toward Mars in their tiny plastic-bubble spacecraft. They were on the alert it didn't pay to take anything for granted in the Big Vacuum The way between the worlds was mostly empty space except for the outlaws of the void who drifted, patiently and vengefully waiting for a victim, then struck! Nelsen and Ramos tensed blips on the radar screen! Maybe meteors.
A Jurassic nightmare confronts the crew of the U-boat when it surfaces in a lagoon on the uncharted island of Caprona. Yet, man-eating dinosaurs are the least of their problems. Out of fuel, lost, and with a mixed crew of English captives and German sailors struggling for control of the submarine, the castaways must co-operate or perish on the unforgiving island. Bowen Tyler enters into the uneasy arrangement with good intentions, but the Prussian captain, has other plans.
Momentous danger again stalks genius inventor and interplanetary adventurer Dr. Richard Seaton. Seaton's allies on the planet Kondal are suffering devastating attacks by the forces of the Third Planet. Even worse, the menacing and contemptuous Fenachrones are threatening to conquer the galaxy and wipe out all who oppose them.
Astro has managed to talk Tom and Roger into coming to Venus for summer vacation. He's got perfect summer work for the three of them: he's got a little business hunting down tyrannosauri and selling the carcasses to restaurants. But stranger stuff than dinos is on the horizon: before they even leave the station for Venus, they're caught in a bombing, and it'll lead them into the thick of the Venetian resistance... !
Child, it was, of the now ancient H-bomb. New. Untested. Would its terrible power sweep the stark Saturnian moon of Titan from space. or miraculously create a flourishing paradise-colony?