Three Black Triangles (1977)

The Public Security Bureau intercept a telegram notifying foreign agents to retrieve the "110 secret". Shi Yan, head of the Reconnaissance Section, starts a campaign of counter-espionage, but one of his agents is soon killed on board a train.

• Release Date: 1977-01-01
• Runtime: 1h 29min
• Production Company: Beijing Film Studio
• Production Country: China
• Directors: Liu Chunlin, Chen Fangqian.