Naman Ramachandran Netflix and Working Title have started production on “The Swimmers,” directed by “My Brother the Devil” helmer Sally El Hosaini.The film tells the true story of swimming sisters Yusra and Sarah Mardini’s journey as refugees from war-torn Syria all the way to the 2016 Rio Olympics.In 2015, after their house was destroyed in the Syrian Civil War, the Mardini sisters decided to flee the country.