Knock Knock was first presented in New York City by the Circle Repertory Company (Jerry Arrow, Executive Director) on January 18, 1976. The play was directed by Marshall W. Mason, with the following cast:
- COHN
- ABE
- WISEMAN
- JOAN
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- Daniel Seltzer
- Neil Flanagan
- Judd Hirsch
- Nancy Snyder
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The setting was by John Lee Beatty, costumes by Jennifer von Mayrhauser, lighting by Dennis Parichy, and sound by Charles London and George Hansen. Dan Hild was the production Stage Manager.
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