When thirteen-year-old Logan and his family move into a run-down old house in rural Virginia, he discovers that a woman was murdered there and becomes involved with his neighbor Arthur in a dangerous investigation to try to uncover the killer.

As her mother prepares to be a contestant on the 1970s television game show, "The $20,000 Pyramid," a twelve-year-old New York City girl tries to make sense of a series of mysterious notes received from an anonymous source that seems to defy the laws of time and space.

After passing a series of mind-bending tests, four children are selected for a secret mission that requires them to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

As Hillary works in the miniature village, allegedly built by elves, in Sara-Kate's backyard, she becomes more and more curious about Sara-Kate's real life inside her big, gloomy house with her mysterious, silent mother.

Lost in the Black Forest, Otto meets three mysterious sisters and finds himself entwined in a prophecy, a promise, and a harmonica--and decades later three children, Friedrich in Germany, Mike in Pennsylvania, and Ivy in California find themselves caught up in the same thread of destiny in the darkest days of the twentieth century, struggling to keep their families intact, and tied together by the music of the same harmonica.

While investigating why someone is trying to force people from their homes to expand a recreation center, Sammy is distracted by the lies she must tell to cover an accident she caused, but which was blamed on her nemesis, Heather.

Growing up in the shadows cast by two world wars, Annabelle has lived a mostly quiet, steady life in her small Pennsylvania town. Until the day new student Betty Glengarry walks into her class. Betty quickly reveals herself to be cruel and manipulative, and while her bullying seems isolated at first, things quickly escalate, and reclusive World War I veteran Toby becomes a target of her attacks. While others have always seen Toby's strangeness, Annabelle...

Two brothers, having run away from the aunt who plans to adopt the younger one, are sought by a detective hired by their aunt, but they have found shelter with--and protection from--Venice's "Thief Lord." Welcome to the magical world of Venice, Italy, where hidden canals and crumbling rooftops shelter runaways and children with incredible secrets.

Bowser is a mutt, just adopted by eleven-year-old Birdie Gaux and her grandmother, but when they all get home to Grammy's bait and tackle shop in the bayou they discover that their prize stuffed marlin has been stolen--so Bowser decides to investigate, and things quickly become complicated and dangerous.

After plummeting through a hole in her backyard and finding herself once again in the room of mysterious jars, eleven-year-old Olive unwittingly releases two of Elsewhere's biggest, most cunning, most dangerous forces.