Christian and Edwin are in a slump. The married couple can’t seem to get out of their dry spell—until their old friend Margaret comes for dinner. After a few glasses of wine and a lot of catching up, the lines between friendship, love, and sex begin to blur. Set in an intimate, living room-like space, Ken Urban’s new play takes on the evergreen topic of monogamy versus the open relationship. It’s “a real treasure to hunt out,” according to Tim Teeman in the Daily Beast. Jack Serio directs. —Jeanne Malle