Guest Stars Debra Monk as Karen Brantley Megan Byrne as Gladys Miller Keren Lugo as Dr. Diana Flores Dierdre Friel as Ella Daniel Dae Kim as Dr. Cassian Shin Co Starring Opal Clow as Luna Nora Clow as Luna Mahalet Dejene as Anesthesiologist Nyala Abebe Marvin Avila as Nurse Ocampo Erick Betancourt as Security Guard McAdams Kimiye Corwin as Dr. Jan Matsudaira Krystal Torres as Agent Douglas Arash Mokhtar as Dr. Aldo Vartka Naaji Kenn as Patient Rosalee Shaquita Smith as Anesthetist Erikka Walsh as Agent Sully Ray Demattis as Patient Carl Makia Martin as Patient Denise Sam Kebede as Messenger Carter Brian Lucas as Patient Rodrigo Candice Jean-Jacques as Brenna Argento Jorja Brown as Messenger Kaina Shadrack Boakye as Messenger Braden Sandra Berrios as Patient Susanna Greg Jackson as Patient Terrence Jax Jackson as Patient Luol Esteban Suero as Paul Argento