|Directed by||Julien Leclercq|
|Produced by||Julien Madon|
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 one night stand 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.
Unwilling to wait for justice, Klara catches Yvan at the nightclub and he tells her that he had not touched her sister. His friends come to his rescue and Klara is evicted after a fight with them. Later, she infiltrates Leonid's villa to find Yvan, but is captured by Leonid's bodyguards. Leonid taunts Klara, freely admitting that it was he who had raped Tania since his son was not interested in women because he was a homosexual. He leaves her to be drowned by his guards, but Klara fights free and escapes. Tania later awakens from her coma, but decides not to press charges despite Klara's urging her to do so. While outside her sister's hospital room, Klara sees a news report in which Leonid states that he will be returning to Russia soon. She notices a nurse rushing past her and right afterwards Tania has a sudden embolism. Suspecting an attempt on her sister's life, Klara pursues and catches the female assassin. Captain Muller informs Klara that she had been sent by Leonid.
Now fully bent on revenge, Klara steals several weapons from her garrison's armory and sneaks into Leonid's hideout. After killing the bodyguards, she pushes Leonid off a bannister when he tries to bribe her, and when she observes his body assumes he's been killed. Klara is stabbed by Yvan and shoots him dead. Seriously injured, she retreats as a tactical police unit arrives. Leonid, however, surprisingly survived the fall and regained consciousness.
Three months later, Leonid is in his Dubai hotel suite and asks the hostesses for room service. Disguised as one of them, Klara brings him a fruit basket, grabs a fork, and rapidly stabs Leonid several times in the jugular and around the neck with it. She secretly travels back to Nice to check in on Tania from a distance. Tania is hanging out with friends and has physically recovered from her ordeal. After observing Tania without her noticing and seeing that she is all right, Klara walks away, now as a fugitive from the law.
- Olga Kurylenko as Klara
- Marilyn Lima as Tania
- Michel Nabokoff as Leonid Kadnikov
- Martin Swabey as Lieutenant Eric Jaubert
- Carole Weyers as Capitaine Catherine Muller
- Andrey Gorlenko as Yvan Kadnikov
- Gabriel Almaer as Armorer
- Antonia Malinova as Maria Kovalev, Klara and Tania's mother
- Blaise Afonso as Opération Sentinelle Soldier
- Guillaume Duhesme as Lieutenant Colonel
- Michel Biel as Aurélien
Produced by Labyrinthe Cinéma and Umedia, Sentinelle was filmed over 35 days in November and December 2019, in Brussels, Belgium, Nice, France, and Casablanca, Morocco. However, post-production was interrupted by the COVID-19 pandemic.
On review aggregator Rotten Tomatoes, the film has a 70% rating based on reviews from 10 critics, and an average rating of 5.80/10. Critical assessments on Sentinelle were mixed to negative. On the website Movie Nation, critic Roger Moore gave the film an unfavorable review, calling it a "tight but illogical skips-a step-or-three thriller". On the website The Last Thing I See, a review calls the film's plot "lean and spare, without much fat or wasted time" but praises Klara's character development.
- "Sentinelle". British Board of Film Classification.
- "Sentinelle review – a thematic revenge thriller that needs more script". Ready Steady Cut. 5 March 2021.
- Lemercier, Fabien (27 April 2020). "Sentinelle by Julien Leclercq chomps at the bit in post-production". Cineuropa. Creative Europe Media. Retrieved 13 March 2021.
- "Where Was Sentinelle Filmed?". The Cinemaholic. 5 March 2021.
- "Sentinelle". Rotten Tomatoes. Fandango. 2021. Retrieved 9 May 2021.
- Moore, Roger (5 March 2021). "Netflixable? Olga Kurylenko punches above her weight in "Sentinelle"". Movie Nation. Retrieved 7 March 2021.
- "'Sentinelle' (2021) Movie Review". The Last Thing I See. 6 March 2021. Retrieved 7 March 2021.
- Lachasse, Jérôme (9 March 2021). "Netflix: le film français "Sentinelle" en tête du top 10 aux Etats-Unis" [Netflix: French film "Sentinelle" tops the top 10 in the United States]. BFM TV (in French).
- Loftus, Johnny (6 March 2021). "Stream It Or Skip It: 'Sentinelle' on Netflix, Where Olga Kurylenko Is A Traumatized Soldier Seeking Justice For An Attack On Her Sister". Decider.
- Martin, Charles (11 March 2021). "Le film français Sentinelle fait un carton sur Netflix aux USA" [French film Sentinelle hits the mark on Netflix in the USA]. Première (in French).