Orders to Kill

I saw this move perhaps 40 years ago, during the height of my interest in espionage and spy tradecraft. I remember being mesmerized by the gritty reality of this movie and the fine portrayal of the agent/assassin as played by Eddie Albert. It remains what is perhaps one of his most serious roles, and the film reveals a side of his talent rarely revealed in his other movies. Every detail of the film, from mission preparation through to the conclusion, was exceptionally well done. I would love to find a copy of this somewhere; it remains a personal favorite.