Briefly put, my fiancee snapped, in an instant, and went psychotic. He physically held me hostage in his room, forced me down, and threatened to kill me, other people in the apartment and himself. He was completely delusional and I'm lucky I wasn't badly hurt because he pulled out a knife at one point. He would talk in a complete growl, like he was demon possessed. It faded very slowly and about an hour later ...