Alfred Hitchcock Presents: Mr. Blanchard's Secret (1956)

The kooky Babs Fenton's imagination is a great asset when writing murder mysteries. But it does not foster peace and harmony in the home, especially not when she has an unimaginative corporate lawyer for a husband. Her overstimulated mind begins working on her new next-door neighbors, the Blanchards, when she realizes she's never seen Mrs. Blanchard. And Mr. Blanchard seems less than eager for her to pay a call. Has Mr. Blanchard, a high school teacher and former university professor, murdered his wife?