One of the easiest ways to spot a disordered personality is the chaos surrounds them. They are always upset with someone, always ticked off at someone else and they gossip endlessly about people who aren't present. Don't make the mistake of thinking they aren't doing the same thing to you when you're not around, because they are.
Amazingly, I once knew a malignant narcissist who let her secret slip. (I'm still shaking my head over this one.) She actually came clean, and told me she was trying to stir up trouble, in order to stay in control. If everyone around her was fighting, no one would be able to resist her particular plans, because they would be so bogged down with the drama she created. It's absolutely amazing how much destruction one person is capable of causing.
Pixabay image top by Nemo