Digging Up A Piece of Hollywood History

A childhood star emerges from obscurity with a scheme to blackmail the celebrity with whom he'd had an underage affair. He digs through his old lover's past, learning he was far from the only secret hidden there. After they arrest him on suspicion, sitting in his cell, the clues coalesce in his mind -- and suddenly, he realizes the stone-cold bitch who did it, and that she had just been waiting for a fool to pin it on.