1977 · 1h 29m · Thriller, Action
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.
Director: Chen Fangqian, Liu Chunlin
Writers: Yingjie Li
Music by: Wang Ming
Cinematography: Jixun Zou
Editor: E Yan