The Crypto-Capers in the Case of the Missing Sock is the first book in The Crypto-Capers series, and is a 103 page chapter book. This series is written for upper elementary and middle school students, and there are currently four books available.

The Crypto-Capers are a team of crime solving detectives. This team is made up of Max and Mia Holmes, their friend Morris, and their Granny Holmes. Each person on the team brings an individual talent or skill to the team. The Crypto-Capers solve crimes by solving cryptograms clues left behind by the criminals. The book is interactive, allowing the reader to solve the cryptograms as part of the story (there is an answer key in the back of the book if the reader needs help).

In The Crypto-Capers in the Case of the Missing Sock, Mr. Delacomb hires the Crypto-Capers to help find a stolen sock that contained an expensive pair of sunglasses that Mr. Delacomb had purchased for his wife's birthday. The Crypto-Capers travel around following the clues until they have solved the crime.

This is a fun, engaging book with enjoyable characters. Instead of just passively reading a story, the reader is challenged through puzzles. This book would be enjoyed by many middle school students, but I think a better audience is the upper elementary student. If you have a child who likes to solve mysteries, check out the Crypto-Capers series.