Paul has disappeared. Run away? Kidnapped? Justine's body has been found: killed by a violent blow to the back of her head. What did she know? Sarah receives a call from the kidnappers: Paul has indeed been taken hostage; she'll get him back if she drops her investigation and returns to Paris. It is becoming increasingly obvious that all the recent events, including Alex's death, are linked to the fire that decimated the Paoli family.
—Happy_Evil_Dude