The Avengers (1961)

S03E25 Esprit De Corps

Title: Esprit De Corps Plot: The enigmatic demise of Corporal Craig from the Highland Guards prompts Steed and Cathy to infiltrate military circles. While navigating the ranks, Steed faces a court-martial, putting his loyalty and wits to the test, while Cathy unexpectedly ascends to a position just below the monarchy.