Missing in Mexico

Missing in Mexico is a mystery novel set in Los Cabos, Mexico. Sarah is a 19-year old who wasn't on the return plane trip from a family vacation. Her parents hire Stan, a Private Investigator, to find her. Even with local help and some promising leads, Stan returns to Seattle to tell her parents that he can't find her. Months later he receives a letter from someone who says she can help him find Sarah, and he jumps on the next plane to Los Cabos. Will this be the break that he needs to find her, or will she remain missing -- Missing in Mexico?