Guest Stars Steven W. Bailey as Joe Kate Burton as Dr. Ellis Grey Loretta Devine as Adele Webber Sarah Utterback as Nurse Olivia Harper Robin Pearson Rose as Patricia Murphy Chris O'Donnell as Finn Dandridge Jessica Tuck as Shannon's Mom Joanie Fox as Sara's Mom Pepper Sweeney as Lisa's Dad Mia Wesley as Karen's Mom Co Starring Jeremy Rabb as ER Doctor Wayne Lopez as Paramedic #2 Haley Ramm as Shannon Kelly King as Sara Damon Standifer as Hazmat Guy Matt Crabtree as IDC Dude Paulina Olszynski as Lisa Frank Merino as Funeral Home Guy Alexandra Brandl as Karen Elizabeth Goldstein as Giselle Toussant Nicolette Collier as Young Meredith