Nancy Drew's keen mind is tested when she searchs for a missing will.

Nate the Great investigates the mysterious disappearance of the purple plastic octopus that his baseball team uses for second base.

While their human family is away, Harold the dog and Chester the cat are boarded at Chateau Bow-Wow where Chester becomes increasingly alarmed by the strange behavior of his fellow guests and the sudden disappearance of one of them.

The first time Melanie Ross meets April Hall, she?s not sure they have anything in common. But she soon discovers that they both love anything to do with ancient Egypt. When they stumble upon a deserted storage yard, Melanie and April decide it?s the perfect spot for the Egypt Game. Before long there are six Egyptians, and they all meet to wear costumes, hold ceremonies, and work on their secret code. Everyone thinks it?s just a game until strange...

Nate the Great solves the mystery of the missing picture.

When fifth-grader Cam notices that the prizes for the most difficult game at the school carnival are rapidly disappearing, she uses her amazing photographic memory to investigate.

The town's ten-year-old walking encyclopedia again solves ten neighborhood mysteries. The final solutions to the cases are at the back of the book, giving the reader a chance to compare his skill to that of Encyclopedia Brown.

When their peregrine falcon brings down a homing pigeon carrying rubies, the Hardy brothers find themselves involved with kidnappers.

The Bobbseys have many adventures when they buy a houseboat, among them the discovery of the Indian legend and treasures of Arrow Falls.

Siblings Evan and Jessie must solve the mystery of a missing cherished family treasure while coming to terms with their beloved grandmother's unsettling behavior.