Mystery at Salt Marsh Bridge — John M. Prophet

In 1998, Casey Miller, a teenage boy, discovers the reason why a teenage girl disappeared in 1898. He and a teenage Black girl team up and push the case further. They get more than they bargained for when, under threats of death, they uncover blackmail, a cache of valuable gold coins and the death of the local librarian. At the same time, Casey is trapped in a promise he made to a good friend not to reveal to the police what he knows about the death of his friend's brother. The mystery provides Casey and Lexie with the motivation they need to resolve their personal problems. It leads them into a series of dangerous episodes, but they show extraordinary courage and persistence, even though some of their actions are questionable. Mystery at Salt Marsh Bridge builds to a peak of suspense and ends with a surprise that even Casey and Lexie could not imagine.