When Batwoman's got to go undercover in a club, she knows just who to call. Mary (Nicole Kang) gets her time to shine in this Sunday's episode, when Kate (Ruby Rose) enlists her help in finding the perfect clubwear. She and Luke (Camrus Johnson) and Julia (Christina Wolfe) are headed undercover to acquire a journal that once belonged to Lucius Fox, and of course that journal is located at a hip nightclub where, if you ask Mary, Kate's usual attire won't cut it.