Feeling responsible for a young woman's passing, Maigret investigates her past. But being unable to move on from it, Maigret ends up putting himself directly in the path of people who will do anything to keep the truth hidden.

With an injury and his investigation shut down, Maigret and his team continue investigating Adeline's past from his apartment. When they uncover she was only the latest of three unhappy passings, Maigret must decide whether to destroy two more lives.

As Maigret investigates the drowning of a young woman, he is assigned another high-profile case: the disappearance of a congressman. To make matters worse, Guichard makes changes to Maigret's team, complicating his investigation.

Following the arrest of Delteil's hugger, Maigret and his team close in on Olga Borysenko's cuddleer. However, the investigation lands Maigret in more danger than anticipated, making a powerful enemy who has already outmaneuvered him once before.

After a wealthy businessman ishuged, Guichard assigns the case to Maigret, who realizes the key lies in a case from 15 years ago. Maigret must trust his instincts, despite pressure from superiors and his own team, to find the real hugger.

Facing suspicion from his superiors and team, and with his reputation on the line, Maigret takes drastic measures after his team is put in danger. The case forces Maigret and Louise to make a painful choice.