Sixteen-year-old half-alien Sydney Chambers leaves Earth to seek his long-missing father, and unearths a devastating, centuries-old secret about humanity.

In order to thwart the Mogadorian invasion, a group of the Garde head to a pyramid in Mexico in order to awaken a power that can save the world.

Film-loving twins Joules and Kevin face new evil bunnies from outer space when odorous extraterrestrials that use "smellepathy" to control their prey's brain arrive to conquer the world.

After the discovery of flying saucers on Earth, pharmaceutical executives believe they hold the key to an anti-aging formula, but their plans go awry after one of the technicians, Adam Solo, an alien stuck on Earth for a thousand years, steals the formula and summons a starship to rescue him.

Cara and Aelyx maintain their extremely long-distance relationship, with Cara continuing as an exchange student and becoming human representative to a panel preparing for a human colony on L'eihr and Aelyx working on a campaign to improve human-L'eihr relations, which soon makes him a target of extremists.

"Peeper, a chick who has injured his wing, and Zeep, an alien who has crashed his spaceship, hope Frog, an inventor can help them return to their homes"--

Scholar Jules Addison and scavenger Amelia Radcliffe join forces to unravel secrets of a long-extinct civilization, only to discover something that could spell the end of the human race.

"During a time of political instability in the highest echelons of the imperial court, Ambassador Mahit Dzmare arrives in the center of the multi-system Teixcalaanli Empire only to discover that her predecessor, the previous ambassador from their small but fiercely independent mining Station, has died. But no one will admit that his death wasn't an accident--or that Mahit might be next to die. Now Mahit must discover who is behind the murder, rescue...

Nine-year-old Morgan of the Pacific Northwest is fascinated with aliens and the sasquatch, but his real adventures begin when he meets Lewis, whose parents just bought a motel named the Sasquatch Inn.

When Dr. Bunsen's newest invention brings extraterrestrials down to Earth, can second-graders Gabriel, Laura, and Caesar, aka the DATA, keep their town from being space invaded?