Based on a 1924 mystery novel by Agatha Christie, "The Man in Black" is the eighth television film inspired by Christie on Warner Brothers Television. Stephanie Zimbalist plays an American tourist in Cairo (Spain representing Egypt). She met a mysterious murder and a stranger; This even happened before she boarded a luxury cruise ship with a list of suspicious passengers. It has been determined that the murderer is an internationally notorious criminal who is looking for a valuable batch of diamonds - but which of the passengers is he or she? Perhaps it's Simon Dutton, the villainous romantic protagonist; A man in a brown suit; Of the title... But don't ignore special guest suspects like Rue McClanahan and Tony Randall.