Fathom Events, Turner Classic Movies and Sony Pictures Entertainment Guess Whos bring two special event events to the cinema, national, and, in addition to the introduction of the TCM host. Joanna (Katharine Houghton), John (Sidney Poitier), is about her new passion. A successful medical career and is a Nobel Prize candidate, although his parents, Christina (Katharine Hepburn) and Matthew (Spencer Tracy) are surprised to know that John Black. Johns parents and their doubts ookHet gisaimpending about marriage, a good doctor has to cutHis job for him, since he does not go to the wedding without the consent of the parents.