Cahills are being kidnapped by a shadowy group known only as the Vespers. Now Amy and Dan have only days to fulfill a bizarre ransom request or their captured friends will start dying. Amy and Dan don't know what the Vespers want or how to stop them. Only one thing is clear. The Vespers are playing to win, and if they get their hands on the Clues ... the world will be their next hostage.

When Clara vanishes after the puppeteer Grisini and two orphaned assistants were at her twelfth birthday party, suspicion of kidnapping chases the trio away from London and soon the two orphans are caught in a trap set by Grisini's ancient rival, a witch with a deadly inheritance to shed before it is too late.

Cordelia, Brendan, and Eleanor Walker, aged fifteen to eight, must rely on a mysterious book to face the Wind Witch and her father, the Storm King, who have kidnapped Dr. and Mrs. Walker and brought them to a strange world of magic.

When the creator of a new, popular reality game is kidnapped, Abigail Hunter and her friends go on their first official mission for The Center and if they are lucky they might just save the world.

When seven members of their family were kidnapped, thirteen-year-old Dan Cahill and his older sister, Amy, got ready for the fight of their lives. But their enemy, a terrifying group known as the Vespers, remained frustratingly elusive. They stay in the shadows, picking off Cahills one by one. And now the Vespers have landed their most serious blow yet ? A blow that strikes at the very heart of the Cahill family. Because Amy and Dan discover that...

It is 1805 and Mary Lambert has always felt safe among the deaf community of Chilmark on Martha's Vineyard where practically everyone communicates in a shared sign language, but recent events have shattered her life; her brother George has died, land disputes between English settlers and the Wampanoag people are becoming increasingly bitter, and a "scientist" determined to discover the origins of the islands' widespread deafness has decided she makes...

After saving the lions from evil Maccomo, Charlie, a boy with the ability to speak the language of cats, goes to Venice to search for his parents and solve the mystery of their kidnapping with help from Bulgarian King Boris.

In the near future, a boy with the ability to speak the language of cats sets out from London to seek his kidnapped parents and finds himself on a Paris-bound circus ship learning to train lions.

"When Jin's little brother is kidnapped by the monster Zilombo, Jin teams up with Chief Inspector of Ancient Artifacts Mizz Z on the streets of London to find him and defeat the monster"--Provided by publisher.

Whisked out of Paris ahead of the Prussian army in 1870, twelve-year-old Irene Adler is reunited in London with her friends, Sherlock Holmes and Arsène Lupin--but Arsène's father has been arrested for murder and the kidnapping of a famous opera singer, and it is up to the three young detectives to solve the mystery.