Psychopathy, not psychosis. It’s easy to get the two disorders confused.
From Psychology Today:
Psychopathy is a condition characterized by the absence of empathy and the blunting of other affective states. Callousness, detachment, and a lack of empathy enable psychopaths to be highly manipulative.
Psychosis occurs when an individual loses touch with reality—a break that can be terrifying to experience or to observe in a loved one. Psychosis can include hallucinations, delusions, disorganized speech, and abnormal movements.