What if mankind's "missing link", the apelike Homo erectus, had survived to dominate a North American continent where woolly mammoths and saber-toothed tigers still prowled while the more advanced Homo sapiens built their civilizations elsewhere? Now imagine that the Europeans arriving in the New World had chanced on these primitive creatures and seized the opportunity to establish a hierarchy in which the sapiens were masters and the "sims" were their slaves.

A dashing master spy takes on the enemies of the Byzantine Empire and discovers impossible inventions like gunpowder and telescopes in a magnificent romp from the maestro of alternate-history science fiction.

Evil is most assuredly afoot - and Britain’s fate rests in the hands of an alluring renegade... and a librarian. These are dark days indeed in Victoria’s England. Londoners are vanishing, then reappearing, washing up as corpses on the banks of the Thames, drained of blood and bone. Yet the Ministry of Peculiar Occurrences - the Crown’s clandestine organization whose bailiwick is the strange and unsettling - will not allow its agents to investigate. Fearless and exceedingly lovely Eliza D. Braun, however, with her disturbing fondness for dynamite, refuses to let the matter rest...

On December 7, 1941, the Japanese launched an attack against U.S. naval forces stationed in Pearl Harbor, Hawaii. But what if the Japanese followed up their air assault with an invasion and occupation of Hawaii? This is the question explored by Harry Turtledove in Days of Infamy, with frightening implications.

Nickie Haflinger had lived several lifetimes...but technically never existed. He was originally a fugitive from Tarnover, the incredibly powerful government think tank that educated him. First he had broken his identity code - then he made his escape. Now he needed to find a way to restore sanity and freedom to the computerized masses and save a world nearing the brink of disaster. He didn’t care how he accomplished this - but the government did. That’s when his Tarnover teachers took him back into their labs, where Nickie Haflinger was set up to receive a whole new education.

Menedemos, the young dashing sea captain, and his helper, the scholarly Sostratos, are sea-traders from the Greek island of Rhodes. Fearless sailors, they will travel any distance to make a profit or to search for rich treasures. While they trade in fineries such as wine and silk (and even, to the chagrin of many, peacocks), they live in dangerous times with pirates, thieves, and barbarians. 

Count Hamnet Thyssen is a minor noble of the drowsy old Raumsdalian Empire. Its capital city, Nidaros, began as a mammoth hunters camp at the edge of the great Glacier. But that was centuries ago, and as everyone knows, its the nature of the great Glacier to withdraw a few feet every year. Trasamund, a clan chief of the mammoth-herding Bizogots, the next tribe north, has come to town with strange news. A narrow gap has opened in what they'd always thought was an endless and impregnable wall of ice.

For years, the third moon in the Alphane system was used as a psychiatric hospital. But when war broke out between Earth and the Alphanes, the hospital was left unguarded and the inmates set up their own society, made up of competing factions based on their particular mental illnesses. When Earth sends a delegation to take back the colony, they find enclaves of depressives, schizophrenics, paranoiacs, and others uniting to repel what they see as a foreign invasion.

The Unites States and China vie for supremacy in the international marketplace as China seeks to become the global leader. A pandemic sweeping across the world send the markets spiraling into chaos, increasing the tension between the two superpowers. Armed conflict needs only a spark. Will China’s attempt to expand their territories into the South China Sea be the trigger that plunges the two mighty nations past the rhetoric and into a shooting war?

When Noah sees an advertisement offering him a chance to rent a starship, he’s convinced it has to be a trick. Already having the worst day of his life, he’s willing to do anything for a distraction, including following a random stranger’s directions to the middle of nowhere to see a ship he doubts exists. Except there is no trick. The starship is real. And Noah’s life will never be the same.