Guest Stars Nick Gehlfuss as Dr. Will Halstead Rachel DiPillo as Dr. Sarah Reese Laura Slade Wiggins as Juliana Parks Stephanie Fantauzzi as Abby McSweeney Marceline Hugot as Geraldine Crane Marcus Choi as Daniel Jung Co Starring Celeste Cooper as Medical Examiner Cooper Cesar Jaime as Paramedic Cesar Eric Lynch as Officer Dichter Conor Woods as Sam Driscoll Sam Pearson as Marcus Walker Andrew L. Saenz as Anthony Ochoa Dylan Jost as Austin Forchette Jillian Mitchell as Shanee Wallis