Welcome back to SIC When police respond to a welfare check in a quiet New York neighborhood, they expect a simple call. Instead, they find a locked bedroom door, two glasses on a nightstand, and a man lying cold on the bed. It looks like suicide. But as detectives dig deeper, they uncover a second tragedy in the same small family — and a pattern that’s far too precise to be coincidence. This is the story of David Castor, and the investigation that would expose one of the most chilling cases...