I agree. The part about how he stops & starts with the bullying. Never do too much or the victim will flee. Just go so far . . . & back off. Actually, when I watched this film I became very upset. And how the film maker describes how Vaknin becomes abusive whenever the camera leaves the room! Just like my N. The transformation whenever somebody walked into the room & then out. Never show Dr. Hyde in public. I truly believe these guys know what they are doing. They abuse deliberately & they only abuse those whom they know will not fight back or report them. And when the police or others are called in to bear witness -- the victim is a liar or crazy, or both. And, the N is so smooth that he convinces everybody that the victim is deranged.