[Director] Brandon McCoy, a Keegan company member, has assembled an able cast and design team to bring to life Guare’s well-spun yarn. … Matthew Keenan’s spare and elegant set consists of a two-sided spinning Kandinsky and free-floating pieces of white flats that hang like disengaged puzzles pieces. Kristina Marie’s costumes are spot on Upper East Side late-‘80s — part “Preppy Handbook” and part society fundraiser glitz.