Dr. TC Callahan (Eoin Macken) is an ex-Army medic who initially exhibits PTSD-type symptoms, having watched his brother die right in front of him on the battlefield.

[8] Production on season one of The Night Shift began in Albuquerque, New Mexico, in late August 2013, and ended filming in mid-November.

[10] Freddy Rodriguez was the next actor cast in the series, in the role of Michael Ragosa, the hospital's administrator who originally wanted to be a doctor.

[12] In early November, Robert Bailey Jr. joined the series as Paul Cummings, a young, but squeamish resident at the hospital.

Alonso will play the role of Dr. Landry de la Cruz, the lone psychiatrist working the night shift.