A series of adventures begin for the Hardy boys after they sail their-ice boat to the desolate and inhospitable Cabin Island.

When Nancy Drew sets out to solve the mystery of a hidden family treasure for her friend Cecily Curtis at Misty Lake, she encounters strange apparitions and a haunted house

Nancy investigates sabotage at the local pharmacy when two customers fall ill and a third dies.

Nancy, Bess, and George's Jiu-Jitsu class at Iron Dragon MMA takes a dark turn when they discover a threatening message at the front desk, leading Nancy to investigate whether a rival academy is to blame.

It's Valentine's day, and Cam is at school when she lerns her mother is about to give birth. Cam and her best friend Eric rush to the hospital with his mom. There in the waiting room, something valuable disappears.

Encyclopedia is back with his partner, Sally Kimball. They'll have to face Bugs Meany, who's up to his old tricks, and Wilford Wiggins, who's still dreaming up new schemes to trick the kids of Idaville out of their money.

Nancy Drew becomes involved in a double mystery concerning a haunted bridge and jewel thieves.

The third-grade class at Nancy's school are learning about Chinese culture, and they'll celebrate the Chinese New Year with a special parade. The highlight of the parade will be a dragon costume. Nancy's class is making it out of feathers, sequins, gold tassels, and red silk. Right before the big day, the dragon disappears!

America's Sherlock Holmes in sneakers continues his war on crime in ten more cases, the solutions to which are found in the back of the book.