Roma Maffia plays “Dr. Liz Cruz,” the outspoken lesbian anesthesiologist at McNamara/Troy who often challenges the views held by Sean and Christian. Last season, Liz was the victim of an underground ring of organ thieves, who stole one of her kidneys. In ill health, she underwent transplant surgery when a generous Dawn Budge (Rosie O’Donnell) donated one of her own kidneys to Liz. She also fell in love with another anesthesiologist, Poppy (Alanis Morrissette) – and quickly fell out of love when she realized that her new partner was a controlling and unstable woman. This season, Liz joins Sean and Christian in their new Beverly Hills practice.