I will, of course, defer to any attorney who may contradict me, but I believe the main point here would be Warfield's prior intent. If he knew beforehand that his friends were planning to commit a crime, then he is equally responsible. If he even thought there was a possibility that this might happen, he is equally guilty. Since Warfield went into the house, it will be tough to prove that he did not have prior knowledge of what might happen. Since he also fled, his guilt can also be presumed. The only way Warfield might not be considered guilty is if he knew NOTHING of what was going to happen beforehand (hearing none of the men's planning) and he went into the house legally and/or with an invitation to visit. How Warfield can explain why he didn't flee the house before the police came and before the victims were tied up--instead of taking off once he realized what his friends had in mind--is another story. Warfield may claim that he was just along for the ride, but I don't think many cops would buy this story, and he'll probably need a great attorney to keep him from joining his friends in prison.