Oliver Platt

Between a horrific serial killer and a shocking heart attack, Dr. Reese's Chicago Med exit was a gripping watch.

The Gaffney scene stealer worked under Dr. Charles for years, and now — she's back.

They say second time's the charm while trailblazing in Gaffney's Emergency Department.

The TV titan guest-starred in an emotionally-charged Chicago Med episode that had viewers gripped.

Chicago Med fans are still reeling from the Season 10 premiere episode. 

Here's who's on staff at Gaffney Chicago Medical Center. 

Season 10 of Chicago Med is here!

Gaffney's Head of Psychiatry, played by Oliver Platt, is the beating heart of the One Chicago medical series.

The newest doctor at Gaffney is charming, driven, easy on the eyes, and has a past with Dr. Daniel Charles.

Niki Delone took NBC Insider behind the scenes of the real-life hospital, doctors' homes, and more.