International Secret Police in order

action film series 5 films, 7h 45m in all, in release order.

Interpol Code 8
1963 · 94 min
Agent Jiro Kitami attempts to stop a smuggling ring from shipping arms to Vietcong guerrillas.
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Trap of Suicide Kilometer
1964 · 89 min
Klima, Deputy Minister of Industry of the Republic of Alabanda, has come to Japan to purchase materials for the water dam construction. Kitami, who called himself a salesman and met with Klima, acts as his bodyguard. However, Kitami learns that a large number of industrial cylinders unrelated to dam construction have been purchased, and Klima secretly confined her secretary, a former army colonel, and threatened to produce poisonous gas. Klima packed the gas in a cylinder and sent it to Alabanda in an attempt to cause a civil war between the government and the tribes. Around that time, Klima secretly investigated Kitami's identity and learned that he was a secret agent.
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A Keg of Powder
1964 · 96 min
In the third installment in the "Kokusai himitsu keisatsu" series, agent Jiro Kitami investigates the mysterious disappearance of a prominent scientist. Edited into Woody Allen's "What's Up, Tiger Lily?" along with the 4th film in the series, "Key of Keys".
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Key of Keys
1965 · 93 min
Intelligence director Suritai asks agent Kitami to steal money from anti-government guerrillas.
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The Killing Bottle
1967 · 93 min
In Hong Kong an International Secret Police (ISP) Agent is murdered while investigating ZZZ, a group bent on assassinating the Prime Minister of Buddhabal. ISP Agents Carter and Kitami are assigned to the case. When the Prime Minister arrives in Tokyo for a friendship visit, Carter and Kitami are on hand to protect him. On hand, too, are assorted ZZZ blackguards. Several attempts on the Prime Minister's life fail, until finally the ZZZ introduces a new device designed to eliminate not only the Prime Minister but the ISP Agents as well: THE KILLING BOTTLE, then, is a pocket-sized container filled with a substance that can expand to thousands of times its size and throttle its victim, then disappear leaving only the corpse.
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Frequently asked questions

What order should I watch International Secret Police in?

1. Interpol Code 8 (1963), 2. Trap of Suicide Kilometer (1964), 3. A Keg of Powder (1964), 4. Key of Keys (1965), 5. The Killing Bottle (1967).

How long does it take to watch all of International Secret Police?

About 7h 45m across 5 released films.

Do any International Secret Police films have post-credit scenes?

None are listed on TMDB.