The Cradle from Hell (必殺! 地獄のゆりかご Hissatsu! Jigoku no Yurikago?) is the 10th episode in the seventh season, Ranma Forever, of Ranma ½ and the 146th episode overall. Aghast when he realises Ranma has surpassed him in the martial arts, Genma desperately develops a new move to let him defeat his son once more.