Ep 1. Maigret and the No.1 Lock (English subtitled)

Maigret season 3 episode 1, titled "Maigret and the No.1 Lock," is an hour-long crime drama set in 1950s Paris. In this episode, Jules Maigret is tasked with investigating the murder of an elderly diamond merchant named Armand de Saint-Hilaire. The crime takes place inside de Saint-Hilaire's locked apartment, and the only way in or out is through a single, supposedly unbreakable lock. Maigret must unravel the mystery of how the killer gained access to the apartment, and why they killed de Saint-Hilaire in such a brutal fashion.

The investigation is complicated by the fact that de Saint-Hilaire was a member of a highly secretive diamond trade organization, and may have been involved in some shady dealings. Maigret must navigate the complex web of intrigue surrounding the diamond trade, and untangle the truth before the killer strikes again.

As Maigret delves deeper into the case, he encounters a colorful cast of characters, including de Saint-Hilaire's enigmatic young niece, a pair of bickering diamond traders, and a seedy underworld figure who may hold the key to solving the mystery.

Maigret's investigation is further hampered by the fact that the case seems to have a personal connection to him. As the detective begins to unravel the tangled threads of the case, he becomes increasingly convinced that there is more to the murder than meets the eye.

"Maigret and the No.1 Lock" is a thrilling mystery that will keep viewers on the edge of their seats from beginning to end. With its moody atmosphere, intricate plot, and expertly drawn characters, this episode is a must-see for fans of classic crime drama. Whether you're a longtime fan of the Maigret series, or a newcomer looking for a gripping mystery to sink your teeth into, this episode is sure to satisfy.