The Mantis makes her next move, Achille finds a crucial clue linking the victims, and Damien pays a visit to his mother's psychiatrist.

When Jeanne receives a live video stream of the next victim, the team scrambles to stop a murder. New clues to the killer's identity emerge.

With the clock ticking and his family in danger, Damien weighs an offer from the killer. A rescue mission takes an unexpected turn.