The Red Shadows.

In 1993, five year old Clara Garnier is kidnapped. The ransom exchange ends in a bloodbath and the child vanishes. 25 years later, Clara’s older sister Aurore, a police officer, finds proof that her sister is living under another identity in Italy. Against her family’ wishes, she persuades Clara to come back to help her discover the truth behind the kidnapping. But Clara’s return unravels family secrets and triggers a series of violent events.