Agent of Influence (2002)

This story of espionage and counter-espionage is based on the novel by Ian Adams. Suspicious circumstances surrounded the mysterious death of a Canadian diplomat. At the height of The Cold War in October 1964, John Watkins, Canada's former ambassador to Moscow and a close friend of Prime Minister Lester B. Pearson, is kidnapped and held in a hotel for questioning by the RCMP at the urging of the CIA. Several days into the interrogation he died. The official obituary claimed that he suffered a heart attack in the company of friends during a farewell supper celebrating his illustrious career.

Unfortunately the movie Agent of Influence is not yet available on HBO Max.