After years in foster care, April gets to live in a mansion where she and four other children are caught up in a mystery related to a missing heir, a lost legacy, and the Phantom.

Teased for his youth and diminutive stature, twelve-year-old Fletcher Moon is a fully-licensed detective who, while investigating his first case, is framed for arson and must team up with his prime suspect to clear his name and find the real criminal.

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.

"An African-American teen in the Witness Protection Program moves to a new town and finds himself trying to solve a murder mystery when his first friend is found dead"--

Throughout the hunt for the 39 Clues, Amy and Dan Cahill have uncovered history's greatest mysteries and their family's deadliest secrets. But are they ready to face the truth about the Cahills and the key to their unmatched power? After a whirlwind race that's taken them across five continents, Amy and Dan face the most difficult challenge yet -- a task no Cahill dared to imagine. When faced with a choice that could change the future of the world,...

Thirteen-year-old Johnny Dixon is put in jeopardy when he and Professor Childermass try to find a robot made many years ago by an evil wizard.

Amy and Dan continue their search for the clues and cross oceans amid ruthless enemies and dangerous truths while following the trail of a famous aviator.

Amy and Dan Cahill have been located once again, this time in the company of the notoriously unreliable Alistair. Spies report that Amy and Dan seem to be tracking the life of one of the most powerful fighters the world has ever known. If this fearsome warrior was a Cahill, his secrets are sure to be well-guarded.

When dinosaur bones from a recent dig mysteriously go missing, and an unidentifiable beast starts attacking animals and people, leaving their mangled bodies behind, Abigail and her eccentric employer R. F. Jackaby, investigators of the supernatural in 1892 New England, find themselves hunting for a thief, a monster, and a murderer.

Hank the Cowdog, Head of Ranch Security, is framed for the murder of a chicken and becomes an outlaw with the coyotes. Includes two short stories which became the inspiration for the Hank books.