In A Number, Salter is a father who must look at the faces that result from his ethically questionable actions.
A Number, directed by James Macdonald, opened off-Broadway on December 7. Eric Grode in his Broadway.com Review of the drama wrote: "A Number revisits the dystopian territory of Churchill's Far Away, but with considerably greater discipline and deeper generosity… This is as close as any living writer has come to the incantatory power of Samuel Beckett, and the topicality of A Number actually gives Churchill an advantage over Beckett in some ways. Her characters' torments do not stem from any sort of existential malaise. Churchill finds within a very real ethical dilemma the intractable, essential questions that hover over every child and every parent. Salter's son, through no fault of his own, contains multitudes. So do we all. And so, unforgettably, does A Number."