Ray Barnett.Ĭarter suffers with insomnia and depression over his separation from Kem and crosses some lines while treating an injured Iraq War veteran. Tired of his endless fight, the man decides to let himself bleed out rather than be treated and have to face more problems down the line he ultimately bleeds out, using suction to keep from drowning in his blood at the same time. Abby also treats a man with recurring tonsil cancer who starts bleeding from the mouth. After doing a brief shift as a nurse to help with Pratt, Chen and Elgin's absence, Abby starts her career as a doctor by dealing with a drug-smuggling patient, ultimately convincing the girl to give up the drugs on her own rather than undergo a far more invasive cavity search. Carter and Kem say goodbye to their son and Kem leaves Chicago. Three new interns, including Abby and Ray Barnett, arrive at County. Kovač attempts to persuade Sam to return to County after receiving a phone call from Sam's son Alex during their trip to Louisville. Elgin dies but both Pratt and Chen require surgery to survive. Pratt, Chen, and Elgin are rescued after crashing into the Chicago River. Louise Fletcher as Roberta 'Birdie' Chadwick.Donal Logue as (Flight Nurse) Chuck Martin.Montae Russell as Paramedic Dwight Zadro.Emily Wagner as Paramedic Doris Pickman.China Shavers as Olivia Evans from Ceasefire.Jordan Calloway as Hospital Volunteer K.J.Mädchen Amick as Social Worker Wendall Meade.Abraham Benrubi as Desk Clerk Jerry Markovic.Giovannie Espiritu as Ludlow - Medical Student.Eion Bailey as Jake Scanlon – Medical Student.Sara Gilbert as Jane Figler – Fourth-year Medical Student.Lucien Dubenko – Attending Surgeon, later Chief of Surgery Donald Anspaugh – Surgeon and Hospital Board Member