A friendly writer with a metal detector, the mysterious inhabitants of a tower house, and the discovery of a locket in the sand are ingredients for the Aldens' latest mystery.

When Darryl, a twelve-year-old orphan, is adopted by a technology genius, he finds himself the star of his very own life-threatening video game.

In the 19th century, an orphaned Chinese boy enrolls in Oxford's Royal Institute of Translation--Babel. Raised in Britain, he must choose whether or not to partake in an unjust war against his homeland.

In 1890 Washington the only family Joseph Johnson has left is his half-wild Indian pony, Sarah, so when she is sold by a man who has no right to do so, he sets out to get her back--and he plans to let nothing stop him in his quest.

In 1910, Audacity Jones is an eleven-year-old orphan living a monotonous life at Miss Maisie's School for Wayward Girls, and wondering why nothing exciting ever happens--but when the mysterious Commodore Crutchfield whisks her away to Washington D.C., she finds herself involved in a sinister and dangerous plot against the president of the United States.

Thirteen-year-old fraternal twins Dallas and Florida have grown up in a terrible orphanage but their lives change forever when an eccentric but sweet older couple invites them each on an adventure, beginning in an almost magical place called Ruby Holler.

A family of nice ghosts protects a British orphan from the diabolical plans of his evil guardians.

While on bicycle trip to their aunt's farm, the four Aldens help solve a mystery.

Picked on, overweight genius Owen tries to invent a television that can see the past to find out what happened the day his parents were killed.

Fourteen-year-old Cecilia has always known she is the true princess of Suala, but when she and her best friend, Harper, decide to speed up her ascendancy to the throne, they find danger and many imposters who challenge her claim.