Television Series By Wolf Films

"as Special Agent Maggie Bell"

"as Special Agent Omar Adom "O.A." Zidan"

"as ASAC Jubal Valentine"

"as SAC Dana Mosier (season 1 only)"

"as SAC Isobel Castille (season 2 onwards)"

"Ebonée Noel as Special Agent Kristen Chazal"

"John Boyd as Special Agent Stuart Scola"

"- Dr. Daniel Charles: Chief of Psychiatry"

"- Maggie Lockwood: ED charge nurse"

"- Dr. David Downey: cardiothoracic surgeon (season 1 only)"

"Peter Mark Kendall - Joey Thomas: lab tech in pathology"

"Patti Murin - Dr. Nina Shore: pathologist"

"- Dr. Will Halstead: Emergency Department Chief Resident (season 1) and attending (season 2 onwards)"

"- Dr. Stanley Stohl: Chief of Emergency Medicine"

"- Dr. Isidore Latham: attending cardiothoracic surgeon"

"Roland Buck III - Noah Sexton: medical student and brother of April"

"- Detective Jay Halstead: brother of Dr. Will Halstead"

"- Jeff Clarke: 4th year medical student"

"Torrey DeVitto - Dr. Natalie Manning: ED pediatrician"

"- April Sexton: ED nurse"

"- Dr. Sarah Reese: 4th year medical student (season 1) and psychiatry resident (season 2 onwards)"

"- Dr. Connor Rhodes: trauma surgical fellow"

"Brian Tee - LCDR Dr. Ethan Choi USNR: ED Chief Resident (season 2)"

"- Sharon Goodwin: chief administrator of Gaffney Chicago Medical Center"