Big, bold military science fiction action from one of the genre’s biggest names.

New York Times bestselling author Ian Douglas's virtuosic Star Corpsman series proves one thing: The Marines are still the toughest sons of guns in the galaxy. As Bravo Company defuses a hostage crisis on an orbiting mining station, Navy Corpsman Elliot "Doc" Carlyle not only saves the lives of a wounded Marine and two extraterrestrial friendlies—he averts a terrorist strike intended to kill billions. His reward? Deployment on a recon mission into the darkest depths known to man. Abyss Deep is a foreboding ocean planet torn by extremes: boiling storm world on one side, unbroken glacier on the other. Humans established a research colony there to study the planet's giant sea serpents—but the colony has gone ominously silent. When Carlyle's team arrives, they discover a vessel belonging to a warlike alien species hovering above the atmosphere. But below the ice lurks a mystery so chilling it will make even Elliot Carlyle's blood run cold.

2025. Tied in to Baxter’s masterful Manifold trilogy, these thematically linked stories are drawn from the vast graph of possibilities across which the lives of hero Reid Malenfant have been scattered.

Galaxies collide in a thrilling new series from bestselling author Ian Douglas, as the last humans in the universe face off against a new threat 2162. Thirty-eight years after first contact, Lord Commander Grayson St. Clair leads the Tellus Ad Astra on an unprecedented expedition to the Galactic Core, carrying more than a million scientists, diplomats, soldiers, and AIs. Despite his reservations about their alien hosts, St. Clair is deeply committed to his people—especially after they're sucked into a black hole and spat out four billion years in the future. Civilizations have risen and fallen. The Andromeda Galaxy is drifting into the Milky Way. And Earth is most certainly a distant memory. All that matters now is survival. But as the ship's Marines search for allies amid ancient ruins and strange new planetary structures, St. Clair must wrap his mind around an enemy capable of harnessing a weapon of incomprehensible power: space itself.

2040: Ruins of ancient civilization uncovered on Mars reveal startling truths about the creation of humankind. 2042: In the gray dust of the Earth's Moon, an extinct enslaving race left behind more answers, more questions...and a grim warning. 2067: As Earth's warring factions clash in space for scraps of alien technology, a strange artifact lies trapped beneath the ice-locked oceans of Europa: a machine that holds the key to the final human destiny. It is called "The Singer" for the eerie tone it emits.An artificial intelligence built eons ago, it may ultimately solve the mystery of the vanished alien races responsible for the birth and development of humanity. But after decades of war, the hostile nations of Earth care more for power than for knowledge. And now all that stands between the coveted Al and an all-out Chinese assault is a vastly outnumbered contingent of U.S. marines, dug in beneath the baleful red eye of Jupiter. As terrifying events light years distant begin to converge---with confrontation imminent and annihilation inevitable---a secret history of creation and doom must at long last be contended with...if humankind is to finally claim its glorious heritage among the stars.2040: Ruins of ancient civilization uncovered on Mars reveal startling truths about the creation of humankind. 2042: In the gray dust of the Earth's Moon, an extinct enslaving race left behind more answers, more questions...and a grim warning. 2067: As Earth's warring factions clash in space for scraps of alien technology, a strange artifact lies trapped beneath the ice-locked oceans of Europa: a machine that holds the key to the final human destiny. It is called "The Singer" for the eerie tone it emits. An artificial intelligence built eons ago, it may ultimately solve the mystery of the vanished alien races responsible for the birth and development of humanity. But after decades of war, the hostile nations of Earth care more for power than for knowledge. And now all that stands between the coveted Al and an all-out Chinese assault is a vastly outnumbered contingent of U.S. marines, dug in beneath the baleful red eye of Jupiter. As terrifying events light years distant begin to converge---with confrontation imminent and annihilation inevitable---a secret history of creation and doom must at long last be contended with...if humankind is to finally claim its glorious heritage among the stars.2040: Ruins of ancient civilization uncovered on Mars reveal startling truths about the creation of humankind. 2042: In the gray dust of the Earth's Moon, an extinct enslaving race left behind more answers, more questions...and a grim warning. 2067: As Earth's warring factions clash in space for scraps of alien technology, a strange artifact lies trapped beneath the ice-locked oceans of Europa: a machine that holds the key to the final human destiny. It is called "The Singer" for the eerie tone it emits. An artificial intelligence built eons ago, it may ultimately solve the mystery of the vanished alien races responsible for the birth and development of humanity. But after decades of war, the hostile nations of Earth care more for power than for knowledge. And now all that stands between the coveted Al and an all-out Chinese assault is a vastly outnumbered contingent of U.S. marines, dug in beneath the baleful red eye of Jupiter. As terrifying events light years distant begin to converge---with confrontation imminent and annihilation inevitable---a secret history of creation and doom must at long last be contended with...if humankind is to finally claim its glorious heritage among the stars.

A spaceship hurled four billion years into the future faces dangers as it searches for home in this space opera adventure by a New York Times bestseller. Lord Commander Grayson St. Clair has guided the Tellus Ad Astra to a part of the universe no human—and possibly no race known to Man—has ever seen. Far from the worlds they know, the colony ship is on its own, facing . . . something that seems to have no weakness. Something whose sole purpose seems to be devouring civilizations. With both time and space as enemies, St. Clair must figure out a way to explore this new corner of space, maintain military order on a mission that was supposed to be civilian, and—somehow—bring the Tellus Ad Astra back to the Milky Way. Combining the drama and action you’ve come to expect from military science fiction master Ian Douglas, this follow up to Altered Starscape is bound to capture your imagination. Praise for Darkness Falling “Douglas’ use of description is exceptional; readers vividly see the scenes as they unfold, just as if they were there. While being true to the classic sci-fi genre, Darkness Falling also tackles deep issues of ethics and morality. Fans of Douglas will love this series, and the latest installment does not disappoint.” —RT Book Reviews

The Year is 2040. The Marines have landed on Mars to guard the unearthed secrets of an ancient and dangerous alien race: Ourselves. Scientists have discovered something astonishing in the subterranean ruins of a sprawling Martian city: startling evidence of an alternative history that threatens to split humanity into opposing factions and plunge the Earth into chaos and war. The USMC -- a branch of a military considered, until just recently, to be obsolete -- has dispatched the Marine Mars Expeditionary Force, a thirty-man weapons platoon, to the Red Planet to protect American civilians and interest with lethal force if necessary. Because great powers are willing to devastate a world in order to keep an ancient secret buried. Because something that was hidden in the Martian dust for half a million years has just been unearthed . . . something that calls into question every belief that forms the delicate foundation of civilization . . . Something inexplicably human.