Btb story; MC has two daughters in college, wife cheats, he goes geo-caching and finds several very valuable antique pennies, rich woman takes control of him and gets his money put into outside banks. His daughters know who this woman is and try to talk him out of having anything to do with her, they describe her as a barracuda. He burns his ex by screwing up a property sale for her new bf. This also being the property he finds the treasure on. Hope I didn't make too much of a mess describing the story. And thank you in advance for any help.
