From all over Europe - even from behind the Iron Curtain - the gypsies make their annual pilgrimage to Provence. The Duc de Croytor, distinguished folklorist and gastronome, is there, and so is Englishman Neil Bowman. But something is different about this year's gathering... What is the secret the gypsies are so determined to hide? Bowman comes too close to it for safety, and before long he is running for his life. From the dizzy…