Pathological Liars
Summary: Pathological liars must lie to themselves before they lie to others; the residue can be spotted in their behaviour and stamens at a later date. Nothing is hiding in plain sight. The limbic brain gives away body language with micro-expressions.
Cluster B types, such as Narcissists (NPD), believe their own lies as it is all they choose to process; everyone else's feedback is filtered out, which is why their behaviour is questionable without change.
Feeding the Facade with fuel and justification will lead to Narcissistic Injury at a later date. The weight of lying means the mind has to hold to timelines, one filtered and adjusted to Fit The Narrative and perception of the self and others, and what really happened.