Bella, Gwen, and the Lost Boys have escaped to Alnwick Castle, but it is not the safe haven they hoped it would be for the "cure" for the Horologia virus has mutated into something even worse--so the Duchess Alyssa and Maddox Hadder set out searching for the virus's origin, an extinct poisonous apple, supposedly from a tree at the center of a labyrinth hidden deep within Germany and guarded by monsters.

Escaping the virus that ravaged his town, robbing victims of their memories, seventeen-year-old Cardinal cares for a group of orphaned kids in a quarantined mountain camp, until a mysterious young woman appears and threatens his closed-off world.

Jason Zhou is trying to survive in Taipei, a city plagued by pollution and viruses, but when he discovers the elite are using their wealth to evade the deadly effects, he knows he must do whatever is necessary to fight the corruption and save his city.

It's been four years since the invisible dome that was created by an alien virus appeared over Perdido Beach. Inside the dome, animals began to mutate and the teens remaining the dome developed dangerous powers. Now the dome has disappeared, but meteors are hitting the Earth with an even deadlier virus. Humans all over the world will mutate into monsters and as some teens begin to turn into heroes, they find that others are out of control and that...

"Lindley Hamilton has been the leader of the space station Lusca since every first generation crew member on board, including her mother, the commander, was killed by a deadly virus. Lindley always assumed she'd captain the Lusca one day, but she never thought that day would come so soon. And she never thought it would be like this--struggling to survive every day, learning how to keep the Lusca running, figuring out how to communicate with Earth,...

In the Kalahari Desert, an educational safari goes wrong and five teens are stranded without a guide. Sarah, the daughter of zoologists, draws on her survival skills to keep the group alive. However, when a silver lion attacks the group, the group learns the lion's silver color comes from a contagious and deadly virus that could destroy life on Earth. Now the teens must outrun the virus and its creators who want to eliminate anyone who knows about...

"When Evelyn Dasher crossed paths with Luc, she was thrown headfirst into the world of the Lux--only to discover that she was already far more involved in their world than she ever suspected. Because the Luxen aren't the only ones with a hidden past. There's a gap in Evie's memory, lost months of her life and a lingering sense that something happened, something she can't remember and nobody is willing to tell her. She needs to find out the truth about...

London is a ruin, destroyed by German bombs, ravaged by the Horologia virus, and ruled by the ruthless Captain Hanz Otto Oswald Kretschmer, whose Marauders search for and seize the children who are immune to the virus in the hope that their blood will produce a cure--their latest victim is sixteen-year-old Gwen Darling's younger sister and Gwen will do anything to get her back, even join up with Pete and his gang of Lost Boys living in a city hidden...

Someone who goes by the name of "V" is planning to unleash a lethal virus that could destroy the human race, and it is up to Nikki Tesla and her friends from the Genius Academy (which has been blamed for an international incident and shut down), to uncover the villain (who is closer to them than they realize) and find a way to stop the biological attack--an effort that will cost Nikki her life.

"CALLING ALL CAHILLS! Announcing a 39 Clues Superspecial adventure -- the gang is back, and called to investigate one of their own: Sinead Starling."--