The Ally

In Itamar Moses's tense and timely drama, Josh Radnor (How I Met Your Mother) plays a progressive Jewish college professor who gets caught in a sticky wicket of social-justice issues when a student petitions him to sign a manifesto. The busy Lila Neugebauer (Appropriate) directs the world premiere at the Public Theater; Cherise Boothe, Elijah Jones, Michael Khalid Karadsheh, Joy Osmanski, Ben Rosenfield and Madeline Weinstein are also in the cast.