Sherlock Jones, Junior Detective Series #3: The Missing Diamond

In this third book of the Sherlock Jones, Junior Detective series, the young detectives find themselves in a life-or-death race for time as a countdown threatens the life of a kidnapped young heiress. Sherlock's brainpower is put to the test as he searches for lifesaving clues in the intricate world of computer technology. For he–and he alone–is left to unlock the secret upon which Lisa Diamaond's life depends. Recommended for ages 9 to 12.