"Big Brother is your sister-in-law" summarized Sheri Linden of The Hollywood Reporter. When Josh (Dylan O'Brien), the only son of Ellen (Diane Lane) and Paul (Kyle Chandler), introduces his new girlfriend (Phoebe Dynevor) one afternoon at their 25th anniversary party, no one suspects that she spells the end for this happy family. The new girlfriend Liz—Ellen’s former student expelled from the university some years before for her radical views—is becoming the darling of "The Change," a fast-rising and controversial political movement.
Komasa, known in Poland for his 2014 film Warsaw 44—a documentary-narrative hybrid about the bloody Polish resistance to the occupying German army in World War II—is no stranger to the horrors of authoritarianism; but in Anniversary, facism doesn't stomp in—as put by Katie Walsh of the Los Angeles Times—it "creeps, pretty and ladylike, on kitten-heeled feet." David Ehrlich of IndieWire lauded Dynevor's "menacing faux-naivete" and Lane received a Satellite Award nomination for Best Actress in a Motion Picture Drama.