Spencer Tracy & Katharine Hepburn (who won the Academy Award as Best Actress for her performance) are unforgettable as perplexed parents in this landmark 1967 movie about mixed marriage. Joanna (Katherine Houghton) the beautiful daughter of a crusading publisher Matthew Drayton (Tracy) & his patrician wife Christina (Hepburn) returns home with her new fiance John Prentice (Sidney Pouter) a distinguished black doctor. Christina accepts her daughters decision to marry John but Matthew is shocked by this interracial union; & the doctors parents are equally dismayed. Both families must sit down face to face & examine each others level of intolerance. In Guess Whos Coming To Dinner director Stanley Kramer has created a masterful study of societys prejudices.