Dr. Alexandre Beck has been slowly putting his life back together since his wife, Margot, was apparently murdered by a serial killer using wild attack animals eight years before.

The same day, he receives an email that appears to be from Margot, which includes a link to surveillance footage that shows his wife looking alive and well; the message warns Alex that they are both being watched.

As Alex struggles to stay one step ahead of the law, henchmen intimidate his acquaintances into telling them whatever they might know about him, eventually killing a friend named Charlotte.

In the meantime, Alex's lesbian sister Anne persuades her well-off partner Hélène to hire a respected attorney, Élisabeth Feldman, to handle his case.

Margot attempts to arrange a meeting with Alex by sending him an email that he must read in an internet café to avoid being spied on.

Keenly aware of the wire, he blocked the bug's transmission to reveal Alex the last piece of the truth: it was Margot who shot Philippe after he beat her; Jacques was covering up her crime, not his.

Subsequent to Margot resurfacing, Neuville hired assassins to torture Alex into revealing her location to avenge his son.

The script made several alterations to the book; a torture expert changed from an Asian male to a white female, and the identity of the killer was switched.