A hard-bitten former search-and-rescue dog helps solve a complicated missing chicken case.

In 1926, magician Harry Houdini arrives in the city to perform magic and to expose fradulent mediums but thirteen-year-old Scooter King, who works for his mother making her seances seem real, needs Houdini's help to solve a murder.

With two attorneys for parents, thirteen-year-old Theodore Boone knows more about the law than most lawyers do. But when a high profile murder trial comes to his small town and Theo gets pulled into it, it's up to this amateur attorney to save the day.

While working on a project translating letters from sixteenth-century Prague, high school senior Nora Kane discovers her best friend murdered with her boyfriend the apparent killer and is caught up in a dangerous web of secret societies and shadowy conspirators, all searching for a mysterious ancient device purported to allow direct communication with God.

Harry and his detective classmates try to find clues relating to a mysterious locked closet in Room 3B.

Bradley and Brian need help from Nate and Lucy after a hypnotist turns their mother into a duck but does not quite get her changed back.

Seventeen-year-old Emma Paxton steps into the life of her long-lost twin Sutton to solve her murder, while Sutton looks on from her afterlife.

When KC and Marshall see lights flickering at night in the Washington Monument, their investigation turns up a monkey, a hole in one of the monument stones, and a hundred-year-old mystery.

When Dink, Josh, and Ruth Rose visit Plymouth, Massachusetts for Thanksgiving, they uncover a mystery that dates back to the landing of the Pilgrims.

Eighth-grader Franny and her friends investigate why most of the students at their exclusive boarding school are brilliant, beautiful, and perfectly behaved.