Walter: The drugs are working fast; perhaps it was the right arm.
Peter: What?

Dunham: What the hell is wrong with you? You did this to little children?
Walter: We should get to work.

Dunham: You abused us Walter, me and those other children.
Walter: No, we were trying to help you. We were trying to make you more than you were.

Walter: Do you think she'll call me dad?
Peter: Who?
Walter: Agent Dunham.

Peter: I'm sorry Walter.
Walter: Apology not accepted.

Dunham: Walter, why did he go after you?
Walter: I don't know. Perhaps he knew my father betrayed the Nazis.

Broyles: What you did tonight.
Walter: Was to use the killer's DNA to target him and only him using his own toxin. If you plan to press charges then so be it. But I don't regret what I did.
Broyles: Good night Dr. Bishop

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.

Perhaps there are some mysteries that are destined to remain unsolved.

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