Nick and his friend Marta decide to investigate when a mysterious fire starts near a Florida wildlife preserve and an unpopular teacher goes missing.

Monday Charles is missing, and Claudia seems to be the one person who notices. They've always been inseparable, and when Monday doesn't show up for school for two weeks, Claudia knows that something is wrong. Monday's mother refuses to give Claudia a straight answer, and her sister April is even less help. How can a teenage girl just vanish without anyone noticing that she's gone?

Reynie, Kate, Sticky, and Constance, all graduates of the Learning Institute for the Very Enlightened and members of the Benedict Society, embark on a scavenger hunt that turns into a desperate search for the missing Mr. Benedict.

Who are the Sawkill Girls? Marion: The newbie. Awkward and plain, steady and dependable. Weighed down by tragedy and hungry for love she?s sure she?ll never find. Zoey: The pariah. Luckless and lonely, hurting but hiding it. Aching with grief and dreaming of vanished girls. Maybe she?s broken?or maybe everyone else is. Val: The queen bee. Gorgeous and privileged, ruthless and regal. Words like silk and eyes like knives; a heart made of secrets and...

"Danny Timmons has looked up to Jack Bailey ever since Jack saved two small children from drowning during the Great Flood of 1940. Now, with his father away fighting in World War II and his mother about to have a new baby, Danny relies on Jack's friendship and guidance more than ever. So when Jack goes missing without a trace from their small Appalachian town, Danny is determined to find him. He wonders if Jack's abusive father could be behind his...

"The Kidd children--including twelve-year-old twins Rebecca and Bickford--follow mysterious clues that take them from China to Germany, in the hopes of finding their missing father and the treasure that will finally free their kidnapped mother"--

After another death, Stevie must navigate mysterious riddles and track down a missing David at the same time a massive storm forces her to confront a killer.

When her sister goes missing on the Bend, becoming the second girl to disappear from the wildlife preserve, Natasha turns to a local girl rumored to be a witch to find her. The car Natasha's sister was driving was found abandoned on the edge of a local nature preserve known as the Bend. Della's family has channeled magic from the Bend for generations, providing spells for the desperate. When Natasha turns up on her doorstep, Della knows it will take...

Buddy the dog risks everything when he leaves his new family to investigate what happened to Kayla and her father, his beloved former owners, by slipping into a van Kayla's uncle is using to empty her house in the middle of the night.

Dink Duncan and his two friends investigate the apparent kidnapping of famous mystery author Wallis Wallace.