Nancy Drew tackles a mystery professional detectives failed to solve--finding a valuable centuries-old message in a hollow oak tree in Illinois.

"Preparing you for an education you'll never forget, this introduction to The McMasters Conservatory, dedicated to the consummate execution of homicidal arts, follows students as they prepare for graduation by getting away with the perfect murder of someone whose death will make the world a much better place to live"-- Who hasn't wondered for a split second what the world would be like if a person who is the object of your affliction ceased to exist?...

Suspecting that their friend has been swindled, the Hardy brothers investigate and find themselves on the trail of a much larger criminal operation.

Aunt Eater must interrupt her holiday preparations to solve some Christmas Eve mysteries.

Dead bodies which appear and disappear mysteriously are threatening to lose Sam's father his job as manager of the Besseldorf Hotel. What can be done? How do you find a ghost?

The Alden children investigate when Mrs. Murray's jewels are stolen during a party for the Starlight Skating Troupe.

Leaving only a cryptic note, Andrew and Evie's mother vanishes on their eleventh birthday. Now, almost a year later, the twins receive a mysterious package from someone named Spy X. They soon learn that the contents of the box will lead them on an incredible journey toward finding their mother - and into a world where no one's identity can be trusted. In Book #1, Andrew and Evie aren't initially sure what to make of the package that arrives at their...