When the residents of a far-distant planet send a message to Earth asking for someone to meet with them, the President of the United States asks Stanley Lambchop, an all-American boy, to be his ambassador.

In 2218 London, seventeen-year-old Zee's plans for a career as an empath are undermined when she becomes distracted by feelings for David, an attractive patient who, she learns, is of an alien race but who has secrets he cannot share.

Traveling to the planet Jurassix to warn its inhabitants of an imminent comet strike, Geronimo Stilton and his crew encounter ferocious, dinosaur-like beasts who have an appetite for rodents.

Daniel faces dastardly Number Two, who has slowly been amassing an underground army of aliens to help him enslave Earth's population in preparation for the arrival of Number One, the most powerful alien in the universe and Daniel's arch-nemesis.

The Earth is in the grip of a new Ice Age, and when twelve-year-old Eleanor's scientist mother disappears in the Arctic, Eleanor sets off on a dangerous journey to find her--and uncovers a mystery, a crime, and evidence that Earth has been visited by extraterrestrials.

"Professor Greenfur, the onboard scientist on spaceship MouseStar 1, has changed color from green to--orange! What's going on? To find out, the spacemice travel to his home planet of Photosyntheson. There, they learn that all of Professor Greenfur's relatives are being threatened by the nibblix, tiny aliens with very sharp teeth! Can the spacemice help in time?" --

In Tokyo, fifteen-year-old Daniel X faces two of the most dangerous aliens on the planet, who are plotting to use video games to control children and turn them into an army of doom.

On a secret mission to evaluate whether the human race should be annihilated, a space alien inhabits the body of a bullied fourteen-year-old boy.

"After more than a year of searching, Rae finally has a lead on her missing father: he's being kept prisoner by the shady alternative energy company, Green On!. Now all she has to do is rescue him--even though that means battling her way through the alien-infested Watchful Woods to reach him. But her father isn't the only secret they have locked up, and if Rae wants to free him, she'll first have to make a deal with someone who has betrayed her in...