It helps to relive the fateful event that put the action in motion in order to properly comprehend the finale of “Stillwater.” Allison sends Bill a letter written in French early in the film, implying that she’s heard a local guy has been taking credit for the crime she was eventually convicted of. Bill has a local acquaintance, Virginie (Camille Cottin), interpret the message for him after finding no help from Allison’s attorney. He quickly enlists her in helping him identify and track down the perpetrator in the hopes of acquiring the information he needs to clear his daughter’s reputation.
With a little social media investigation, Bill is able to complete the assignment, albeit his first meeting with the evil Akim (Idir Azougli) leaves him bloodied and injured, and no closer to discovering the truth. Allison is also furious that he squandered her chance at acquittal. A second chance meeting with Akim proves more fortunate, with Bill following down and capturing the petty criminal, holding him prisoner while waiting for the results of a DNA test that may establish his daughter’s innocence. While it eventually does, Bill is confronted with the morality of his conduct as well as the wrath of his friend Virginie, whose small daughter he put in severe danger while bringing Akim in. IMDB