Why do narcissist praise you and then make you out as monster to others?

Narcissists often praise individuals to create a sense of admiration and dependency, which helps them maintain control and manipulate emotions. Once they feel secure in that power, they may turn against the person to deflect attention from their own flaws or failures, portraying the individual as a monster to others. This tactic not only preserves their self-image but also isolates the victim, making it easier for the narcissist to dominate the relationship. Ultimately, this behavior stems from their deep-seated insecurities and need for validation.