Tess Cohen was a 23-year-old aspiring artist with dreams of painting beach scenes. She longed to leave the small town of Starks, Louisiana, and head for California to make a go of it as an artist. Instead, she compromised with her parents and decided to spend the summer of 1968 on Galveston Island with her younger sister, Abigail. It was just meant to be an extended summer vacation. Abigail would return to college in the fall and Tess would finally...