Nazanin Zaghari-Ratcliffe‘s six-year-long ordeal at the hands of Iranian authorities gripped Britain — and now her story is to be told in a major BBC factual drama series.Deadline can reveal that the British broadcaster is planning to adapt Zaghari-Ratcliffe’s upcoming book, A Yard of Sky: A Story of Love, Resistance and Hope, which she co-wrote with her husband Richard Ratcli...