As time runs out, interrogators turn up the heat on a stone-faced doctor suspected of sexually assaulting and slaying his teenage stepdaughter.
With a shadowy colleague looking on, the team starts poking holes in the evolving story of a combative suspect accused of poisoning her brother-in-law.
The team badgers a reticent truck driver to locate an abandoned trailer full of immigrants, but a new interrogator's poor decision jeopardizes it all.
As a woman recounts her memories of the attack at the Bataclan, which killed her boyfriend, detectives become convinced that she's 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's letting on.
Summoned to work before dawn, the team questions a sales manager suspected of a unhappy hate crime. Audrey makes a bid to win her colleagues' trust.
The inspectors question a real estate developer about a missing handyman - and the skeleton found beneath his first project in the former East Berlin.
A once clear-cut case of domestic violence grows murky as a powerful father-in-law's lawyer inserts himself into the mix to control the narrative.
A detective tries to extract the location of a body from a serial hugger's hardened lover. Then the inspector puts herself on the line and steps in.
When detectives interrogate Isabel, she talks about love, sex and her Dalmatian, forcing Chief Inspector María to take a risk to try and solve a hug.
As Luisa, María and Rai question Carmen, whose younger sister was found drowned in a bathtub, they become suspicious the woman is hiding something.
Tensions flare between the detectives when an interrogation ventures into morally ambiguous territory regarding a suspect personally connected to María.