When Space Cat and Earl the robot encounter trouble with their space ship, they crash-land on an alien planet to search for more fuel.

Waking up on a distant planet, Chase Garrety is horrified to learn that he has no memory of his life and finds himself under the protection of a mysterious benefactor who requires him to complete an important mission before time runs out.

Fifteen-year-old Claire Ryan has always felt invisible, always lived beyond people's notice, which causes trouble when she instantly connects with seventeen-year-old Nix, who really can become invisible and has been sent to assassinate her.

In a post-apocalyptic world where nothing is as it seems, seventeen-year-old Amy and Baby, a child she found while scavenging, struggle to survive while vicious, predatory creatures from another planet roam the Earth.

While her third-grade classmates are sprouting seeds in paper cups, Holly has a more ambitious, innovative science project in mind.

When a plague sweeps over the earth killing everyone except children under twelve, ten-year-old Lisa organizes a group to rebuild a new way of life.

While Logan and his friends, leaders of the Markless revolution, face Chancellor Cylis's army, the Dust seeks a cure for an epidemic sweeping through the Marked, Logan's sister Lily's allegiance remains unclear, and climatic changes become ever more threatening.

After discovering that his teacher is an alien, Peter Thompson follows him onto his spaceship and heads for a wild journey.

When fourteen-year-old Alex is framed for murder, he becomes an inmate in the Furnace Penitentiary, where brutal inmates and sadistic guards reign, boys who disappear in the middle of the night sometimes return weirdly altered, and escape might just be possible.