Agent 3S3: Massacre in the Sun (originally titled Agente 3S3, massacro al sole, also known as Agent 3S3: Hunter from the Unknown and Hunter from the Unknown) is a 1966 Italian adventure-eurospy film directed by Sergio Sollima, here credited as Simon Sterling. This is a sequel to Agent 3S3: Passport to Hell (1965) with Agent 3S3 once again played by George Ardisson. Orietta Berti, a popular Italian singer, sings in English the film's theme "Trouble galore".[1][2] The two films were shot back to back.
This was filmed on locations in Berlin and Ibiza.[3] It was coproduced by France, where it was released as Agent 3S3, massacre au soleil, and Spain, where is known as 3S3, agente especial and Agente 3S3 enviado especial.
