Overview

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.

Cast

Lei Ming, Ling Yuan, Liu Jia, Ping Zhang, Bi Jianchang, Qin Wen, Cao Cuifen, Zhang Yan

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Frequently asked

What is "Three Black Triangles" about?

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.

When was "Three Black Triangles" released?

Three Black Triangles was released in 1977.

Who stars in "Three Black Triangles"?

The cast includes Lei Ming, Ling Yuan, Liu Jia, Ping Zhang.