Good example of a narcissist tricking people, Open Eyes. I remember that news story about all the millionaires he duped and stole money from, for his fake investment company.

So you're absolutely right. THey can be nice and charming and manipulative. It's hard sometimes to recognize when you're being duped, or when to call out someone's behavior or not b/c it is borderline red flag or its a red flag that looks like a pink flag.