When to talking to Morris in jail, Peter mentions "I've got a wife and kids. I've got problems, I admit it, but I'm not a monster. They're trying to pin those other rapes on me. It's just like the entrapment case."
Shirley tells Jack, "You couldn't face the truth. You convinced Peter to lie for me at his entrapment hearing and they convicted him. He felt betrayed and started attacking women."