The BBC and Fremantle ‘s Dancing Ledge Productions have unveiled a pair of behind-the-scene images from “ Prisoner 951 ,” a new drama series based on Nazanin Zaghari-Ratcliffe’s real-life imprisonment in Iran. Starring Narges Rashidi (“Gangs of London,” “Under the Shadow”) and Joseph Fiennes (“Dear England,” “The Handmaid’s Tale”), “Prisoner 951” tells the story of Zaghari-Ratcliffe, who in 2016 was torn from her baby daughter and accused of espionage in Iran, facing years of prison time. '