Callan (1969) Death of a Hunter (S2E15)

Callan is a British drama espionage television series, which originally aired between 1967 and 1972. It features Edward Woodward as David Callan, an agent of a state secret service dealing with internal security threats to the United Kingdom. Death of a Hunter (S2E15): Captured by the KGB, Callan is drugged, brainwashed and released - with instructions to kill Hunter. He obeys - but who actually dies? Hunter? Meres? Or Callan? Who get shot in the process? It features Edward Woodward, Derek Bond, Anthony Valentine, and Russell Hunter.