|"Trust Your Gut"|
|Season 3, Episode 03|
|Air date||December 5, 2017|
|Written by||Eli Talbert & Safura Fadavi|
|Directed by||Mark Tinker|
"Nothing to Fear"
"Naughty or Nice"
Goodwin receives financial complaints from the hospital board, causing headaches for the doctors when new guidelines are implemented. Dr. Manning and Dr. Choi can't figure out what is wrong with a young girl, leading them to look to a questionable source for answers. Meanwhile, Dr. Charles and Dr. Reese are surprised when they treat a man who has a peculiar theory about his sickness, while Dr. Rhodes continues to compete with Ava in the operating room.
- Brian Tee as Dr. Ethan Choi
- Colin Donnell as Dr. Connor Rhodes
- Marlyne Barrett as Maggie Lockwood
- Nick Gehlfuss as Dr. Will Halstead
- Norma Kuhling as Dr. Ava Bekker
- Oliver Platt as Dr. Daniel Charles
- Rachel DiPillo as Dr. Sarah Reese
- S. Epatha Merkerson as Sharon Goodwin
- Torrey DeVitto as Dr. Natalie Manning
- Yaya DaCosta as Nurse April Sexton