Did Halloween night claim the life of one of the hospital staff?

That was a key question on Code Black Season 2 Episode 4 when Willis, Noa and Elliot rushed to a "haunted" theater, but things were far from okay.

Watch Code Black Season 2 Episode 4 Online

It was quickly revealed that Dr. Nolan, her boyfriend and son were trapped in the theater, but who was the one preventing everyone from getting out?

Use the video above to watch Code Black online to get caught up with the latest developments for the staff of the busy hospital.

Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.