When Gianna Petrillo came home from college with a teaching credential in hand, there were plenty of ghosts to greet her in that Central California oil town -- both old and new. Her old flame, who was the son of an oil baron, had married ... but he certainly hadn't settled down. In fact, something had gone terribly wrong for Harvard Knottingham. He was even threatening to blow up his family's oil wells.Esther Grim, a peculiar electrical engineer,...