The hit novel My Policeman reveals the story is set in 1950s Brighton, England. A woman named Marion falls in love with a man named Tom, but years later, Tom strikes up a romance with Patrick, who he meets at a museum. Because of homophobia during the time period, it's "safer" for Tom, a policeman, to marry Marion, but she and Patrick must share him, until one of them breaks and three lives are destroyed.
Mama Mia! Here We Go Again star Lily James is also set to co star alongside Harry Styles as his wife, Marion.
My Policeman is due to start production Summer 2021.