Dawn

Sybil Thorndike's depiction of heroic WWI nurse Edith Cavell is so reserved that it's sometimes difficult to perceive her character's compassion in Herbert Wilcox's biopic. Probably the only film in history in which the heroes discuss their plans for smuggling escaped POWs out of the country while doing their knitting. Wilcox remade the film 10 years later with his wife Anna Neagle in Thorndike's role.