Walter has extra motivation to get to the bottom of the case on "The Bishop Revival." That's because a few deaths may be liked to his former experiments.
Walter finds himself more invested than ever in the deaths at a wedding in the episode "The Bishop Revival." They may be connected to an old experiment.
Walter: That man corrupted. He corrupted my fathers work. Dunham: I understand. Walter: No, no, it was more than that. You see, family is very important to me. There's nothing I wouldn't do.