You hear the story all the time, but everyone dismisses it as an urban legend: A young college boy, in river towns like Minneapolis, leaves a party and disappears into thin air. Rumors fly that he was kidnapped and sold into slavery — or worse. Don’t be ridiculous, the authorities insist, he must have slipped into the river and his body was swept away. But, guess what? The rumors are true: There is a reason these missing young men are always 18 to 25 and very good looking — because that’s the way we like them! Garbriel Cruz is such a boy, a well-built, 21-year-old college student who left a party drunk and walked home alone, along the river. But he didn’t fall off a rock into a swift current or jump off a bridge; he was grabbed and thrown into a van, stripped of his T-shirt and shoes, blindfolded and bound. He is now hanging in a dark, concrete room, pants around his knees. “What are you going to do to me?” he asks, tears in his eyes. His captor, Garret Stone, is a muscular, unsmiling young man, nearly naked but for some leather gear. And he has a whip.