Off the coast of Montpellier, a diver exploring a wreck uncovers a highly sought-after treasure: a golden statuette of Medusa, the monster from Greek mythology. The day after his discovery, the young man's boat is found adrift, with no one on board. Has the curse surrounding the legendary statue struck again? Or is a rival treasure hunter behind the diver's disappearance? - It's up to Police Captain Guillaume Le Guen of Montpellier's regional crime squad and his brother, Gendarmerie Captain Damien Le Guen, to solve the mystery. There's no time to waste and they'll need all their investigative skills, particularly because the victim is none other than Thibault Gagneur, Guillaume's son-in-law, whose daughter Emilie is expecting his grandchild.

Medusa's Mystery

It all begins in the early 60s, in a slum just outside Paris inhabited by Algerian immigrants. Malika is 5, and her mum has just bought her a brand-new pair of sandals. They're so white that the little girl can't keep her eyes off them, and doesn't see the reversing truck. Then begin years of hospital, operations, suffering and struggle. Years far from her family, during which the little Muslim girl, in the hands of Catholic nurses and nuns, discovers music and singing at mass. From that point on, fighting the racism of French society as well as the enduring prejudices of her own community, Malika follows her dream and moves mountains to become the woman everyone will one day call "the diva of the ghetto".