Sherlock Jones and the Phantom Airplane

In Book 4 of the Sherlock Jones, Jr. Detective Series, Penny and Sherlock feel as if they ve landed in the lap of luxury when they are invited to vacation in the plush lakeside lodge of a wealthy friend. But it soon becomes evident that the young detective team is not going to enjoy a quiet retreat. As they begin to uncover the secrets of some shady activity at a neighboring estate, their investigative zeal gets them a little too close. Close enough to be captured by the enemy Adventure abounds in this mystery for 9 to12-year olds."