Blondie's Secret is a 1948 American comedy film directed by Edward Bernds and starring Penny Singleton, Arthur Lake, Larry Simms, and Marjorie Ann Mutchie.

Dagwood prepares for a long-delayed vacation with the family.

His boss Mr. Radcliffe has promised the Bumsteads that there’ll be no more postponements for their holiday.

But when something comes up that requires Dagwood’s presence, Radcliffe hires a couple of thugs to steal Blondie and Dagwood’s luggage so that they’ll have to stay in town.

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