" Which meant the monster had not murdered WIlliam.

Someone else had squeezed the life from the boy. Someone else had carefully taken the pendant. Someone else had found Justine and planted the pendant on her when she was asleep. Someone else had engineered the sequence of events perfectly so that-

I let out a choked sob of horror.

Someone else had engineered the sequence of events perfectly so that he could have Justine's body.

'Victor,' I whispered.

'Yes, my love?" he answered, a dark silhouette in the doorway. "

― Kiersten White , The Dark Descent of Elizabeth Frankenstein