Trivia: Ron Moody was only 4 years older than Bernard Cribbins, who plays his son.
Trivia: Patricia Neal won the Academy Award for Best Actress for her role as Alma Brown, even though she's only on screen for a total of 21 minutes and 51 seconds. This is the shortest performance ever to win the Award.
Trivia: Sorrell Booke plays Alan Alda's father in the movie, even though in real life he's only six years older than Alda.
Trivia: Lionel Jeffries was only 5 years older than June Thorburn, who plays his daughter.
Trivia: Anthropology Professor Robert Orwell Sutwell is writing a book about the sex habits of teenagers. His secretary tells him, "Hang on to the movie rights. American-International will snap it up in a minute." American-International is the real-life Los Angeles studio which produced several teen-oriented films, including "Reform School Girl," "Hot Rod gang," "I Was A Teenage Werewolf" - and "Beach Party."
Trivia: Fay Compton and Michael Redgrave play mother and son in this film. In real life, Compton was only thirteen years older than Redgrave.
Trivia: In this rather clunking classic murder mystery, the closing gimmick of the film is a sequence of several otherwise unremarkable supporting characters grandly removing their heavy latex makeup to reveal A-List Hollywood movie stars who played mundane roles in the film. The heavily-disguised stars in this film include Kirk Douglas, Tony Curtis, Robert Mitchum, Burt Lancaster and Frank Sinatra. Director John Huston (who also made a cameo appearance in the film) tried to convince Elizabeth Taylor to play a disguised part in this movie, as well; but, when Taylor learned that her lovely face would be completely hidden under heavy latex, she turned down the role.