Dispatched by their mother to learn why his estranged twin brother Gregory (or "Brock Jones, PhD," as he's known to fans of his bestselling self-help book Coffee, Black) has disappeared, Stewart Detweiler drives 1,500 miles to find his twin hanging from a ceiling beam in their deceased father's lakeside A-frame. But instead of reporting him dead, Stewart decides to become him. As he sees it, he's not taking his brother's life; he's saving it. In...