Sequel to Threshold, Book Three in the best-selling Boundary series.

An exploratory mission to Mars and beyond begets a rush to gain control of advanced alien technology—even if it leads to an interplanetary war.

Stranded on Europa: Madeline Fathom miraculously crash lands the crippled Nebula Storm on Europa with the surviving crewmembers of an ill-fated EU vessel landing nearby. Help is most definitely not on the way. Escaping a trap of mysterious alien technology—then using it to her advantage—is Madeline's only chance to escape a very frosty demise on a very lonely moon.

Listen to the author discuss the book here on the Baen Free Radio Hour.

An all-new David Weber Honorverse short novel, I Will Build a House of Steel, chronicling the early days of the Manticoran Star Kingdom and the reign of King Roger.

Have you ever finished the latest Honor Harrington novel from David Weber and wished you could linger in Weber’s Honorverse just a bit longer? Now you can with this treasure trove of tech, specs, and insights on David Weber’s mega best-selling Honor Harrington series. Orbital characteristic of key planets, regimental order of the Royal Navy, backstory on the history and drama of the Star Kingdom’s birth and early days—you’ll find it all here, illustrated and thoughtfully arranged by the BuNine Weber research group, and overseen by David Weber himself.

Listen to BuNine and David Weber discuss the book here or here on the Baen Free Radio Hour.

Two legendary Andre Norton SF adventure novels in one omni volume.

Here Abide Monsters: On a world where parallel and alternate universes intersect Celtic faery folk, modern humans, and inhabitants of a distant future share the planet's surface. There are also aliens in flying saucers which are capturing and enslaving new arrivals who fall through the "gates." One group of new arrivals meets a protector, a man who calls himself the Herald. He promises safety—but in exchange, he requires a piece of their souls in payment.

Yurth Burden: Two races share Zacar: the plains dwelling Raski and the mountain dwelling telepaths, the Yurth. The two are often in contention along their borders, and terrible war periodically breaks out between them. When a young Yurth woman goes on her coming of age vision quest, one young Raski warrior follows her—and together they discover a secret that will surely unbalance their world and may change Zacar forever.

After an Earth-scarring apocalyptic battle, the meta-humans have turned back a massive invasion of super-science powered Nazi war machines. Now meta-hero organization Echo and sometime Russian ally CCCP must battle back. Task one: to hunt down the secret puppetmasters behind the Nazi robot invasion, the Thule Society. It's "go time" once again for the meta-heroes, including fire-bender John Murdock, hacker-witch Vikki Nagy, healer Belladona Blue, super-quick Mercurye—and most of all for their ghostly ally, Seraphym, the spirit of the world who uses her secret influence to direct the fight against a Thulian-based tyranny of evil and slavery that is fast descending upon the entire universe!

Lummox has been the pet of the Stuart family for generations. With eight legs, a thick hide and huge (and growing) size, Lummox is nobody's idea of man's best friend. Nevertheless, John Stuart XI, descendant of the starman who originally brought Lummox back to Earth from a distant planet, loves him. John isn't about to let the authorities take his pet away and, with his best friend Betty, determines to save Lummox even if it takes leaving the life he's known forever. However, what John and Betty don't realize is that the survival of the Earth itself may depend on the true nature of The Star Beast.

An all-time great science fiction coming-of-age classic from seven-time Hugo winner and Dean of Science Fiction, Robert A. Heinlein.

Download the comprehensive Teacher’s Guide here.

Listen to the Robert A. Heinlein Roundtable 1 here on the Baen Free Radio Hour.

Empire of the Atom and The Wizard of Linn: Global war smashed civilization—or so the legends told-but not all of its machines. A caste of "scientists" arose who knew how to repair and operate the ancient machines—but not how they worked—and worshipped at the altars of the atomic gods who were said to make the machines run. Society was a strange mix of the modern and the medieval, with armies riding on horseback into huge spaceships, then flying to human colonies on other planets to wage war with swords and arrows.

Then came the mutant Clane, who would have been put to death for his deformities had he not been born into the ruling family. Though his body was twisted, his mind was brilliant, and he not only recovered the lost science behind the ancient machines, but found the truth behind the legends of civilization's downfall. Alien invaders, not human war, had reduced humanity to barbarism as a prelude for a later return in force to colonize the Solar System. And that return would happen soon, unless Clane could find a way to stop it. . . . For the first time, the entire Clane saga, told in the two novels Empire of the Atom and The Wizard of Linn, is complete in one volume.

Mission to the Stars, Van Vogt's sweeping novel of interstellar adventure, is also included, along with the two short novels in the "Ezwal" series, chronicling the struggle of one man to convince a feral but intelligent species to join with humanity in the battle against a mutual enemy-but first he must convince the lone Ezwal who is trapped with him in a deadly jungle to co-operate, or neither will survive.

Listen to the authors discuss the book here on the Baen Free Radio Hour.

Two of SF's most acclaimed authors collaborate with John Maddox Roberts, Holly Lisle and Tom Wham to bring a whole new life to Professor Harold Shea and his band of not-so-merry companions in the impeccably conceived, richly-imagined sequel to The Complete Compleat Enchanter.