As a woman recounts her memories of the attack at the Bataclan, which killed her boyfriend, detectives become convinced that she is hiding something.

After a casualty at a building site, the team interrogates a construction executive who seems to know more about the victim than she is letting on.

Summoned to work before dawn, the team questions a sales manager suspected of a violent hate crime; Audrey makes a bid to win the trust of her colleagues.