My favorite scene in the movie “The Fourth Protocol” (hmm, 1980s I believe) was quite near the beginning if memory serves — the Kim Philby character gets snuffed because he knew too much.
I believe the real Philby just drank himself to death. I am sure he was really disappointed. He was doing his commie betraying in a cozy Britain and then out of a whim of a fate he actually had to escape to a real “commie paradise” of Moscow.