Season 5: Episode 24 - Grounds For Deception

Grounds For Deception: The case of the Greek antiquities smugglers gets reopened, when Stella's nemesis returns to NYC and ends up dead in central park. Though ordered off the case and on suspension, Stella pursues it and discovers her old mentor, Professor P, has been smuggling antiquities and is someone connected. She follows him to Greece, only to have Mac follow her trail. They meet up and work together to solve the case and restore stolen artifacts to their home country. Stella also learns valuable information about her birth mother.