In 1960, when her husband, Rupert, a British diplomat, is posted to the remote Seychelle Islands in the Indian Ocean, Penelope is less than thrilled. But she never imagined the danger that awaited her family there. Her sun-kissed children run barefoot on the beach and become enraptured by the ancient magic, or grigri, in the tropical colonial outpost. Rupert, meanwhile, falls under the spell of a local beauty who won’t stop until she gets what she wants. Desperate to save her marriage, Penelope turns to black magic, exposing her family to the island’s sinister underbelly…