SPRING HILL, Fla. AP – For three years, neighbors in a quaint, middle-class community scarcely saw the lanky 16-year-old boy who lived with his adoptive mother and her boyfriend.

Now, they know why: According to authorities, the teen was brutally abused and held captive in his own home. Most recently, he’d been confined to a bathroom, locked from the outside and sealed with a piece of plywood over the window.