In 2016 Nazanin Zaghari-Ratcliffe was arrested in Iran and charged with espionage. Her young daughter, Gabriella, was with her at the time and the family have been separated ever since. We join her husband, Richard Ratcliffe, in London following a 15-day hunger strike as he campaigns to get his wife released. He shares his experience in detail and explains how Boris Johnson could have hindered her chances of coming home