A ship heading from Earth to Athena, a planet 500 light years away, is suddenly attacked by the Gerns, an alien empire in its expansion phase. People aboard are divided by the invaders into Acceptables and Rejects. The Acceptables would become slave labor for the Gerns on Athena, and the Rejects are forced ashore on the nearest 'Earth-like' planet, called Ragnarok. The Gerns say they will return for the Rejects, but the Rejects quickly realise that that isn't going to happen.

A ship heading from Earth to Athena, a planet 500 light years away, is suddenly attacked by the Gerns, an alien empire in its expansion phase. People aboard are divided by the invaders into Acceptables and Rejects. The Acceptables would become slave labor for the Gerns on Athena, and the Rejects are forced ashore on the nearest 'Earth-like' planet, called Ragnarok. The Gerns say they will return for the Rejects, but the Rejects quickly realise that that isn't going to happen. Ragnarok has a gravity 1.5 times that of Earth, and is populated by deadly, aggressive creatures and it contains little in the way of usable metal ores. This, combined with a terrible deadly fever that kills in hours, more than decimates the population.

Alien meets Alexandra Bracken’s The Darkest Minds in this thrilling debut novel about prison-guard-in-training, Kenzie, who is taken hostage by the superpowered criminal teens of the Sanctuary space station—only to have to band together with them when the station is attacked by mysterious creatures. Kenzie holds one truth above all: the company is everything. As a citizen of Omnistellar Concepts, the most powerful corporation in the solar system, Kenzie has trained her entire life for one goal: to become an elite guard on Sanctuary, Omnistellar’s space prison for superpowered teens too dangerous for Earth. As a junior guard, she’s excited to prove herself to her company—and that means sacrificing anything that won’t propel her forward. But then a routine drill goes sideways and Kenzie is taken hostage by rioting prisoners. At first, she’s confident her commanding officer—who also happens to be her mother—will stop at nothing to secure her freedom. Yet it soon becomes clear that her mother is more concerned with sticking to Omnistellar protocol than she is with getting Kenzie out safely. As Kenzie forms her own plan to escape, she doesn’t realize there’s a more sinister threat looming, something ancient and evil that has clawed its way into Sanctuary from the vacuum of space. And Kenzie might have to team up with her captors to survive—all while beginning to suspect there’s a darker side to the Omnistellar she knows.

An innocent man fights to escape—and exact vengeance—in this New York Times–bestselling author’s riveting science fiction adventure. Convicted of a crime he did not commit, Jonathan Renn is sentenced to life in the Swamp, a prison planet death row in a distant galaxy. Renn only has two choices, escape the Swamp or die in the process. Defending himself from attacks by deadly, native monsters and his fellow convicts, Renn is obsessed with escaping the planet and getting his revenge on the people who set him up. Marla Marie Mendez is even more down on her luck. Trapped inside a cybernetic dog and dropped defenseless into the Swamp, Marla can only rely on Renn and her claws to save her from the unfriendly elements. They must find a way out of the Swamp and quickly before their life sentence is cut short.

Stranded on Mars with seven other convicts, one man must fight for survival on a planet where everyone's a killer in this edge-of-your-seat science fiction thriller for fans of The Martian. Former architect Frank Kittridge is serving life for murdering his son's drug dealer, so when he's offered a deal by the corporation that owns the prison -- he takes it. He's been selected to help build the first permanent base on Mars. Unfortunately, his crewmates are just as guilty of their crimes as he is. As the convicts set to work on the frozen wastes of Mars, the accidents multiply. Until Frank begins to suspect they might not be accidents at all . . . Dr. S. J. Morden trained as a rocket scientist before becoming the author of razor-sharp, award-winning science fiction. Perfect for fans of Andy Weir's The Martian and Richard Morgan, One Way takes off like a rocket, pulling us along on a terrifying, epic ride with only one way out.

A Nebula and Hugo Award Finalist: The first novel by the New York Times–bestselling author of the Xanth series. Chthon was Piers Anthony’s first published novel in 1967, written over the course of seven years. He started it when he was in the US Army, so it has a long prison sequence that is reminiscent of that experience, being dark and grim. It features Aton Five, a space man who commits the crime of falling in love with the dangerous, alluring Minionette and is therefore condemned to death in the subterranean prison of Chthon. It uses flashbacks to show how he came to know the Minionette, and flash-forwards to show how he dealt with her after his escape from prison. The author regards this as perhaps the most intricately structured novel the science fantasy genre has seen.

The final adventure! Zita the Spacegirl is back and the odds are stacked high against her. Will everyone's favorite spacegirl prevail?