Possible Clues:

• 1978 Cronyn/Tandy play, with 'The'
• Pulitzer-winning play by D.L. Coburn, with 'The'
• 1977 D.L. Coburn play, with 'The'
• Activity that includes knocking
• It includes knocking
• Card-playing session
• With 'The,' 1978 play that won a Pulitzer