AllMovie

As a gift to his young wife Ethel (Janet Ward), real estate agent Ralph Montgomery (Everett Sloane) hires a cook named Mrs. Sutton (Beulah Bondi). Before long, however, Ralph has reason to regret this act of extravagance, as evidence begins to pile up suggesting that Mrs. Sutton is the same woman who has recently poisoned three people. When traces of arsenic show up in Ralph's hot chocolate, it would appear that his suspicions about Mrs. Sutton have been confirmed. But, as often happens on Alfred Hitchcock Presents, the truth of the matter is something else entirely.