This week: Carter falls off the wagon after treating an Iraq War veteran, Luka make an offer to Sam, Neela’s parents make a surprise visit, Ray brings out the rocker look we all know and love, Abby does does her best to help a young woman who is a victim of human trafficking, and a gay couple is...

On this week’s season premiere: Pratt, Chen, and Elgin continue to fight for their lives after their car ends up in the Chicago River, Neela makes a surprise return to Chicago, Abby has her last nursing shift ever, a new group of interns have their first day, with a bit of help from Alex, Luka...