When the Underworld spawns a supernatural plague that sweeps through London, Mio must use her family's ancient mystical sword to save the world from the forces of evil.

A mysterious villain plans to unleash an unholy plague upon the world and only the expert team of ex-Special Forces agents can thwart this deadly act of bio-terrorism.

A deadly, flu-like epidemic and a plague of flesh-eating creatures threaten the lives of the children at Perdido Beach while Sam, Astrid, Caine, and Diana each struggle with doubts and uncertainties.

An unidentified virus wipes out most of the Earth's population, liquefying their bodies. The virus moves as if it has an agenda-- it adapts as it moves quickly across the planet. Leon, his mother, and younger sister Grace, who just moved to London from New York, must run for their lives.

Eleven-year-old Gregor and his younger sister, Boots, return to the Underworld beneath New York City to find the cure for a terrible plague that threatens the life of their mother, as well as the lives of the people, bats, and rats who populate the underworld.

Fie, a sixteen-year-old chieftain from a lowly cast of mercy-killers, must rely on her wits and bone magic to smuggle the crown prince of Sabor to safety. Fie's Crow caste of undertakers and mercy-killers takes more abuse than coin; when they're called to collect royal dead, she's hoping they'll find the payout of a lifetime. But Crown Prince Jasimir faked his death, and Fie's ready to cut his throat. He offers a wager that she can't refuse: protect...

In a dark future, when North America has split into two warring nations, fifteen-year-olds Day, a famous criminal, and prodigy June, the brilliant soldier hired to capture him, discover that they have a common enemy.