"He filled Christine's mind, through the terror with which he inspired her, but the dear child's heart belonged wholly to the Vicomte de Chagny. While they played about, like an innocent engaged couple, on the upper floors of the Opera, to avoid the monster, they little suspected that someone was watching over them. I was prepared to do anything: to kill the monster, if necessary, and explain to the police afterward. But Erik did not show himself; and I felt none the more comfortable for that."