There was a 7-year age difference between Joan Bennett and Raymond Burr, playing husband and wife, and also between Burr and Martha Hyer, playing father and daughter.
This movie is listed as being released October, 1960. One would assume filming ended months before to allow time for editing, etc. A 1961 Dodge Polara station wagon is visible in one scene. Normally cars are released in the fall of the previous year. That would mean the car would have been released around the same month as the film.
Feature film debut of Anne Helm.