I'm in the Sierra Madre (Dead Money add-on), and I was trying to be a nice guy -- I really was. But when the time came that I could decide whether to kill my companions or let them live and disable their collars, Dean started yammering about how he had a scheme for centuries to loot the joint, and then set me up to die with holograms.
I eventually found and whacked him, but is there a way to do Dead Money without killing him? (It seems that Christine and Dog/God don't need to be killed; I'd like to do it without killing Dean as well.)