The Alfred Hitchcock Hour "The Ordeal of Mrs. Snow" (1964)

Season 2 episode 25 of the series, directed by Robert Stevens, with Patricia Collinge, Jessica Walter, Don Chastain, George Macready, Cal Bartlett, June Vincent, Pamela Curran et al ( www.imdb.com/title/tt0394074/). Host Alfred Hitchcock. Original air date 14 April 1964.