Despite Scream Queens have a lot of promotional photos and videos of "Is he/she the killer?' on the main characters , I think the main Red Devil is not one of the female main characters BECAUSE it's impossible for someone to switch their outfits to the Red Devil mascot so quickly and vice versa after a scene. It's hard to determine who is the killer.
PLEASE POST YOUR KILLER/FEMALE BABY IN THE BATHTUB THEORIES!!! I'm really desperate to know who it is