They Might Be Giants is a 1971 American comedy mystery film based on the 1961 play of the same name (both written by James Goldman) starring George C. Scott and Joanne Woodward. Sometimes mistakenly described as a Broadway play, it never in fact opened in the United States. It was directed in London by Joan Littlewood in 1961, but Goldman believed that he “never got the play right” and forbade further productions or publication of the script.

https://en.wikipedia.org/wiki/They_Might_Be_Giants_(film)