The June 8 1943 Toronto Daily Star contained this rather stark advertisement for a movie:
The Next Of Kin (1942) turns out to be a wartime propaganda film, stressing the importance of avoiding careless talk with what could possibly be enemy agents: “Be Like Dad: Keep Mum”. I’m not sure whether viewers lured in by this ad would have been disappointed or not; you can decide for yourself, as it is available on YouTube.
The movie starred Mervyn Johns (1899-1992), who for some reason isn’t listed in this ad. Johns appeared in a number of Ealing movies, and appeared as Bob Cratchit in the 1951 version of A Christmas Carol (my favourite version). He appeared in his last movie in 1976.