[1] In this film inspired by the James Bond film series, Richard Harrison stars as Secret Agent Fleming known as Bart Fleming Agent X-117 in some prints and as Bob Fleming Agent 077 in others.

It was released in the United States by American International Pictures as Secret Agent Fireball (to exploit the then current 007 film, Thunderball) and double billed with Spy in Your Eye.

Harrison repeated his Agent Fleming role in A 077, sfida ai killers/Killers are Challenged/Mission Casablanca.

When a series of scientists are killed, Bart Fleming Secret Agent X-177 travels to Hamburg and Beirut to discover that Soviet Agents are killing the scientists.

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