The Merchant (play) would make a big profit, but this did not happen. He wrote a book about the play in 1999, "The Birth of Shylock and the Death of Zero Mostel". In this play, Shylock is a good man and Antonio's, the title character in Shakespeare's play, good friend. They bond in their love of knowledge and mutual dislike of the antisemitism in their community. Shylock's demand for a pound of flesh is meant as a jest, but he can not retract it. Both Shylock and Antonio are relieved when the demand is denied in court. Reviewing "The Merchant", critic Michael Billington
The Two-Character Play seen to be his most personal interpretation. It took Williams over ten years to write "The Two-Character Play", longer than any other play, and it illustrates an innovation in his writing style. The characters in this play, Felice and Clare, are two actors on tour; they are also brother and sister. They find themselves deserted by their acting troupe in a decrepit "state theatre in an unknown state". Faced (perhaps) by an audience expecting a performance, they enact "The Two-Character Play" – an illusion within an illusion, an 'out cry' from isolation, panic, and fear. ("Out Cry" was the title