In the Marseille region, a woman returns home for her father's birthday, only to be swept into a chilling investigation. As a string of seemingly random murders unfolds, Esther races against time to uncover the truth behind the elusive Zodiac killer.

In the Marseille region, a woman returns home for her father's birthday, only to be swept into a chilling investigation. As a string of seemingly random murders unfolds, Esther races against time to uncover the truth behind the elusive Zodiac killer.