In the 10th mystery in this series, Meg Mackintosh spends an afternoon at Red Herring Beach with her grandfather. After going for a swim, and after several suspicious characters come in and out of the beach area, Meg's grandfather realizes that his gold watch has gone missing. Meg tackles this mystery with her cousin Maxwell as they search for clues and are led off the track by some red herrings, all adding to the mystery. Clues can be found in the illustrations and questions are posed to the reader to help them solve the case with Meg and Max.

Meg investigates the theft of a rare book from a locked library. Clues hidden in different places in the library challenge the reader to solve the mystery before Meg. This title is for children aged 7 to 10 years.

Ages 7 to 9 years. Designed to both entertain and teach valuable lessons from United States history, this book follows two young detectives as they solve mysteries from the nation's past. Ninth in a popular series, this book features more maps, photos, and puzzles to be examined as Meg and Peter race across the country -- from Plymouth, Massachusetts to San Francisco, California -- to figure out the historical mysteries. Children are encouraged to participate in solving the mystery by answering questions, figuring out codes, and searching pictures for clues while learning important lessons about history, geography, and diversity.

Meg and her classmates visit a medieval castle and become eyewitnesses to the theft of a priceless silver chalice. The reader is asked to solve the mystery before Meg, using clues found in the text and illustrations. This title is for children aged 7 to 10 years.

Ages 7 to 10 years. In the book that launched her adventures, Meg follows a series of notes hidden in her grandfather's house to solve an old mystery of a missing baseball signed by Babe Ruth. The reader is challenged to interpret each clue before Meg solves it.

On a whale watch, Meg tries to solve a puzzling case involving a stolen treasure map. The reader is asked to solve the mystery before Meg, using clues found in the text and illustrations. This title is for children aged 7 to 10 years.