"On Swift Horses" is a 2024 American romantic drama film based on Shannon Pufahl's 2019 novel. The story is set in the 1950s and follows Muriel and her husband Lee, who are starting a new life in California after Lee returns from the Korean War. Their plans are disrupted by the arrival of Lee's younger brother, Julius. While Lee hopes to build a life together with Muriel and Julius in San Diego, Julius instead heads to Las Vegas, where he finds work in a casino and begins a secret romantic relationship with a male co-worker named Henry. Meanwhile, Muriel embarks on her own secret life, gambling on racehorses and discovering a love she never expected with her female neighbor Sandra. The film explores themes of hidden desires, identity, and the search for personal freedom in a conservative postwar America. It portrays a complex love story involving Muriel, Julius, and others as they navigate societal constraints and personal secrets

. The narrative highlights the struggles of living double lives, with Muriel and Julius each pursuing their true selves amid the pressures of family and society. The story is both a romantic drama and a reflection on the era's cultural and political tensions, including the paranoia of the Cold War period