It seemed like the perfect romantic afternoon: a kayaking trip for two on the Hudson River. But it ended in tragedy when the beautiful, blonde Angelika Griswald called 911 to report her fiancé had fallen into the choppy, frigid waters. The authorities assumed it was an accident. But when the bereft bride-to-be posted videos of herself doing cartwheels on social media, shortly before Vincent’s body was found, suspicions of Angelika’s role rose to the surface.