“At some points, when David and Dan and I had discussions about what way we should go in, I would always favor sticking with the books, while they would favor making changes,” he said. “I think one of the biggest ones would probably be when they made the decision not to bring Catelyn Stark back as Lady Stoneheart. That was probably the first major diversion of the show from the books and, you know, I argued against that, and David and Dan made that decision.”