English nurse Edith Cavell is matron in a small private hospital in German-occupied Brussels during WWI. When the son of a recently deceased patient escapes from a German prisoner-of-war camp, Cavell aids him to reach Holland and safety. This leads to Cavell, a local noblewoman, the grandmother of the escaped prisoner-of-war, and others to form an organization to help Belgian, French, English and other soldiers escape as well. Eventually the Germans become aware of what's happening and take action. With Anna Neagle, Edna May Oliver, George Sanders, May Robson.