In "Her Secret" (aka "The Girl from Georgia" in the UK in 1934 when shown there)Johnny, the son of a rich-man, is an idling, good-for-nothing loafer, who leads a wild-and-hectic life, flunks out of college, and is disinherited and made to leave home by his father, who has given up on his on in despair. Johnny opens a gas-station in Arizona, where "Waffles,", a girl from Georgia, takes him in hand and employs her own methods of reformation with astonishing and fruitful results.

An airliner makes a forced landing at night in the desert. The passengers and crew take refuge in a nearby deserted house. Soon some of the passengers are found murdered, and one of the passengers reveals himself to be a detective who was guarding one of the murdered passengers, who was carrying a bag of diamonds--which is now missing. The detective must find out which of the passengers is the killer.