Watch: Agent Harris: The FBI Agent Who Became Tony's Guy

Agent Dwight Harris starts The Sopranos as Tony's pursuer and ends it as something close to his guardian angel, and the show never treats that as strange. Watch the video above, then read the strangest relationship in the series.

Harris is the FBI's organized-crime man who spends years building cases against Tony, then gets transferred to counterterrorism and starts quietly feeding Tony information about the New York family's movements. The show's point is institutional, not personal: after 9/11 the Bureau's priorities moved on, and a mob boss became a useful asset instead of a target. Their final exchange, Harris celebrating a hit on Phil Leotardo like a fan, is one of the series' most quietly shocking moments: the law, cheering for its favorite gangster.

Quick answer: Harris shifted from hunting Tony to helping him because counterterrorism made the mob a low priority and Tony a useful source.

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