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.