At a pivotal moment in “Equivocation,” a key figure in the Bill Cain play comes up with a succinct way to describe theater: “It’s not a way, to lie, you know. It’s a way of telling the truth.” The ...

On Sept. 11, 2001, playwright Bill Cain watched the twin towers of the World Trade Center burn and collapse. That cataclysm inspired him to write a play, “Equivocation,” which made its California ...