From the NY Times:
Mr. Willis said he was looking forward to the challenge. “The idea of being trapped at someone’s house and getting smashed around and not having any control over it seems fun to me,” he said. He is fairly private about his actorly process, so he wouldn’t discuss just how he might play Paul or how he would convey the suffering that Paul endures. He doesn’t think of himself as a method actor and won’t draw on some deep store of personal anguish to rev himself up for the role. “I can’t remember the last time I did that,” he said.
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