[s2e5] Greivous Bodily Harm Today

Terry Marsh, a former con man and partner of Lightman's in London, claims he owes a massive gambling debt to a dangerous mobster. Lightman agrees to help by using his deception-detection skills at a high-stakes poker game, only to realize Terry has been manipulating him into a much larger criminal conspiracy involving counterfeit currency.

It is revealed that years ago, Terry took the fall for a crime they both committed, allowing Lightman to pursue his legitimate career. By the end of the episode, after an FBI raid, Lightman considers their debt finally settled. [S2E5] greivous bodily harm

The episode's title refers to a specific legal term in English criminal law: Terry Marsh, a former con man and partner