Caravan To Vaccares by Alistair MacLean

During the annual gypsy gatherings in Provence, a sharp-eyed British drifter teams with a fearless young woman to probe a string of suspicious deaths and disappearances tied to a covert smuggling operation. Their hunt leads through bullrings, caves, and the Camargue marshes, as ambushes and betrayals reveal a web of espionage hidden behind age-old traditions. Outnumbered and hunted, they must unmask the ringleaders before they are silenced for good.

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