It was an historically-fearful time in late 1941 and early 1942 and audiences were not prone to easily accept a comedy at that time (e.It was his sixteenth (out of twenty-eight) sound film - this time directed by Norman McLeod (director for he Marx Bros.Kaufman and Edna Ferber, that was originally produced on the stage by Sam H.Harris.The screenplay for the film was written by Herman Mankiewicz and Frances Marion, with Donald Ogden Stewart providing additional dialogue.Every day, he commits to memory fifty new facts, and remembers every one of them.Facts from history, from geography, from newspapers, from scientific books...Test him please.Ladies and gentlemen.Ask him your questions and he will answer you fully and freely.Members of the audience are encouraged to ask questions of Mr.Memory to test his abilities.In a confused give-and-take within the crowded music hall, both boisterous hecklers and serious questionners present him with challenges about Derby winners, dates, "What causes Pip in poultry?", "How old is Mae West?", and "Who was the last British heavyweight champion of the world?" With his question, the well-tailored, anonymous audience member, Canadian hero Richard Hannay (Robert Donat) unconsciously identifies himself as a foreigner, a member of the upper-class who is visiting London from Canada: "How far is Winnipeg from Montreal?" Mr.Malcolm was informed that the humans were planning to detonate a series of C-4 explosives beneath the tower to massacre the apes in revenge for their invasion:C-4.