Barbara Henning urges her husbands Islamic State captors to please release him, we need him back homeThe wife of the Manchester taxi driver held hostage by Islamic State militants has begged the group to spare his life and allow him to return to his family.In an emotional televised appeal, Barbara Henning, whose husband Alan has been held in Syria for nine months, said she could not understand why the group could not acknowledge the truth about his reasons for travelling to the country.