Mia Farrow and Patti LuPone met on Broadway in 1979. The actresses, now in their 70s, were both performing onstage—Farrow in Romantic Comedy and LuPone in Evita. Reintroduced years later by their mutual friend Stephen Sondheim, their paths continued to cross. Now the two are co-starring in The Roommate, a new dark comedy written by Jen Silverman and directed by Jack O’Brien. Sharon, middle-aged and recently divorced, has never had a roommate before, but she needs someone to rent the spare room in her Iowa home. When she finds Robyn, middle-aged and from the Bronx, Sharon has no idea how much her life is about to change. “I certainly had no intention of being back on Broadway so fast,” says LuPone, “but when I read the play and heard Mia was attached, it became the easiest decision of my life.” —Jeanne Malle