Three Black Triangles

Name: Three Black Triangles
Genre: Thriller, Action
Released: 1977-01-01T00:00:00.000Z
Duration: 89 min
Rating: 7
Cast: Lei Ming, Ling Yuan, Liu Jia, Ping Zhang, Bi Jianchang

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.