The Next of Kin is a 1942 British 'Ealing Studios' drama WWII film. It features Nova Pilbeam, Mervyn Johns, Jack Hawkins, Reginald Tate, David Hutcheson, Mary Clare, Stephen Murray, John Chandos, Basil Sydney, and Torin Thatcher.
Wartime propaganda piece giving the warning "Be like Dad, Keep Mum". A gossipy housewife is overheard talking about what her son is doing by a Nazi spy.