When Bert Adams brings his boss, Mr. Mason, home for dinner, he and his wife Carrie hope Mason will take the opportunity to announce that Bert will be promoted to fill a new vacancy in the company's shipping department. But Mr. Mason has other plans for that vacancy, and for Bert.

When the apparent murder of two stockbrokers are discovered in their Wall Street office. Police Inspector Crane summons forensic expert Dr. Crabtree to the crime scene. A beautiful woman found in the closet, a frightened African-American elevator operator, and a suspicious business associate are among the witnesses questioned.