In The Thirty-Nine Steps, Hannay struggles to thwart an assassination plot designed to hasten war between Britain and Germany. Later he is plucked from the trenches first, in Greenmantle, to frustrate a plot to ferment an uprising in the Islamic world; and then, in Mr. Standfast, to undertake a vital secret mission against a German spy ring operating among pacifist elements in England. After the war, his adventures continue in The Three Hostages; and then in The Island of Sheep, when an old oath to protect the son of a friend from his days in Africa draws him into new danger.

A young sea captain discovers a stowaway - and allows him to stay, eventually seeing in him a reflection of himself. Or perhaps that's all there ever was. Wendy Mullen's contralto voice captures the music of the sea; you'll be mesmerized by the telling and the tale. Conrad is at his best, and Mullen's reading captivates.

From the Audie-nominated narrator of The Martian. In eleven years' time, a million members of an alien race will arrive at Earth. Years before they enter orbit, their approach will be announced by the flare of a thousand flames in the sky, their ships' huge engines burning hard to slow them from the vast speeds needed to cross interstellar space. These foreboding lights will shine in our night sky like new stars, getting ever brighter until they outshine even the sun, casting ominous shadows and banishing the night until they suddenly blink out.

Welcome to Ringworld, an intermediate step between Dyson Spheres and planets. The gravitational force created by a rotation on its axis of 770 miles per second means no need for a roof. Walls 1,000 miles high at each rim will let in the sun and prevent much air from escaping. Larry Niven's novel, Ringworld, is the winner of the 1970 Hugo Award for Best Novel, the 1970 Nebula Award for Best Novel, and the 1972 Ditmars, an Australian award for Best International Science Fiction.

Kyle Riggs is snatched by an alien spacecraft sometime after midnight. The ship is testing everyone it catches and murdering the weak. The good news is that Kyle keeps passing tests and staying alive. The bad news is the aliens who sent this ship are the nicest ones out there.

In the year AD 3000, Earth is a dystopian wasteland, plundered of its natural resources by alien conquerors known as Psychlos. Fewer than 35,000 humans survive in a handful of communities scattered across the face of a post-apocalyptic Earth. From the ashes of humanity rises a young hero, Jonnie Goodboy Tyler. Setting off on an initial quest to discover a hidden evil, Jonnie unlocks the mystery of humanity’s demise and unearths a crucial weakness in their oppressors.

From early work like "Rescue Party" and "The Lion of Comarre", through classic stories including "The Star", "Earthlight", "The Nine Billion Names of God", and "The Sentinel" (kernel of the later novel and movie 2001: A Space Odyssey), all the way to later work like "A Meeting with Medusa" and "The Hammer of God", this comprehensive short story collection encapsulates one of the great science fiction careers of all time.

Barsoom Series Collection: 7 John Carter Stories is an audiobook collection of seven novels/stories of John Carter by Edgar Rice Burroughs. It will transport you to a fascinating new world unlike any other. Join John Carter as he finds himself on another planet beyond his deepest imagination - Mars, with almost a complete lack of resources.

It spite of the tightest high-tech security ever conceived, billionaire Jordan Lime is savagely killed by a weapon that tears him apart limb by limb with grim, laserlike efficiency. An army unlike any other has fired its first shot. In its ranks are the world's most vicious killers, fortified by a super-advanced arsenal against which there is no defense. It is a madman's plan to conquer the earth by destroying it. He will unleash the devastating powers of the atom and let the cataclysmic wrath of nature do the rest.

As the Jedi and the Republic focus on internal struggles, a new threat surfaces beyond the farthest reaches of the Outer Rim. An enemy appears from outside known space, bearing weapons and technology unlike anything New Republic scientists have ever seen. Suddenly, Luke, Mara, Leia, Han Solo, and Chewbacca, along with their children, are thrust again into battle. But this time, all their courage, sacrifice, and even the power of the Force itself, may not be enough.

In the spring of 1939, a top-secret organization was founded in London: Its purpose was to plot the destruction of Hitler's war machine through spectacular acts of sabotage. The guerrilla campaign that followed was every bit as extraordinary as the six men who directed it. One of them, Cecil Clarke, was a maverick engineer who had spent the 1930s inventing futuristic caravans. Now his talents were put to more devious use: He built the dirty bomb used to assassinate Hitler's favorite, Reinhard Heydrich.

The war that erupted in Star Wars: Episode II Attack of the Clones is nearing its boiling point. The Separatist forces continue their assault on the Republic as the diabolical triumvirate of Count Dooku, General Grievous, and their Master, Darth Sidious, fine-tune their strategy for conquest. Capturing Trade Federation Viceroy and Separatist Councilmember Nute Gunray is the mission that brings Jedi Knights Obi-Wan Kenobi and Anakin Skywalker, with a squad of clones in tow, to Neimoidia.

So the Ulleran challenge begins, with the rantings of a prophet and a seemingly incidental street riot. Only when a dose of poison lands in the governer-general's whiskey does it become clear that the "geeks" have had it up their double-lidded eyeballs with the imperialist Terran Federation's Chartered Uller Company. Then, overnight, war is everywhere.

We colonized 700 planets. Humankind enjoyed the benefits of expansion room and the end of wars. We even disbanded our military. Then the Krall found us. The Krall have used thousands of years of combat to select the genes of the strongest and fastest warriors. They are a species determined to dominate the entire galaxy, through destruction and annihilation of every opponent.

Koban is an uninhabited high-gravity planet with impossibly fast savage animals, which employ organic superconducting nerves. This deadly world is where the Krall tested humans for war capability.

From the atomic age in Atlantis to a world remote in space and time, two incredible ancient races, the Arisians and the Eddorians, are in the midst of an interstellar war - with Earth as the prize.