Watch Sentinelle (2021) online

Sentinelle is a 2021 French action thriller film directed by Julien Leclercq, written by Julien Leclercq and Matthieu Serveau, and starring Olga Kurylenko, Marilyn Lima and Michel Nabokoff.

Klara serves in Syria in the French Army as an interpreter for Opération Chammal. After the apprehension of a suspected terrorist, she witnesses the man's young son blow himself up at his father's behest with explosives hidden on his body. Traumatized by the blast and experiencing migraine headaches from it, she is transferred home to Nice and moves back in with her mother, Maria, and her sister, Tania, while serving in counter-terrorist operations as part of Opération Sentinelle. On patrol, her trauma manifests itself in impulsive, sometimes disproportionally violent behavior towards suspects. The painkillers she was prescribed are not enough for her and she begins to buy more illegally.

One night, Klara and Tania go out to a nightclub. Tania separates from Klara to join a party of Russians and signals to Klara that she is leaving with them. Klara keeps an eye on her sister as she begins to dance with a woman, and afterwards has a lesbian tryst with her. The next day she is notified that Tania had been raped and savagely beaten into a coma. Klara starts her own investigation of the crime, inspects the club's security footage, finds out the name of the man Tania was with, and takes a photograph of him in the footage. Captain Muller of the French Police, who is leading the investigation, identifies the suspect as Yvan Kadnikov, the son of Leonid Kadnikov who is a very influential Russian tycoon. Yvan is hiding out in his father's villa at Saint-Jean-Cap-Ferrat, but both have diplomatic passports and immunity, making them untouchable without a complicated legal process.