Do skilled liars have meta-cognitive insight into their own deceptive abilities and their target's lie detection abilities? Following a mock crime activity during which ground truth was established using a body-worn camera, Participants took part in an Investigative Interview providing both truthful and deceptive information. Lying skill was measured by the ability to mask differences in false and true accounts when evaluated against a scorecard of known indicators of deception and non-verbal demeanour cues mistakenly associated with dishonesty. Truth/lie judgments from 3rd party raters were also collected. A subset of individuals of known deceptive ability then took part in a retrospective think-aloud paradigm and video-stimulated reflexivity using the body-worn camera and interview footage. Analysis of their self-assessment of deceptive performance and the ability of their interviewer to detect their deception revealed important differences across cognitive, metacognitive and socio-cognitive domains.