Mackinac Passage: The General's Treasure

As a reward for their heroics, a group of summer friends find themselves once again at a magnificent cottage on Mackinac Island.  Their idea of rest and relaxation is soon interrupted by a chance meeting with an elderly heiress.  She presents the friends with a seemingly worthless poem which leads the teens to various sites around the Island---and ultimately into the perilous grasp of a deranged treasure hunter.