The Arch Screen is a large TV screen just beneath the arch at the entrance of each Halloween Horror Nights, starting with HHN 18. It was used to delve deeper into the backstories of the haunted houses of the event.
Bloody Mary spoke on the screen, resembling a mirror. She would break out every now and then, and scream in pain.
The Usher's Palace Rules played out, and movie clips. Videos of the houses (such as fake news broadcasts) were used.
The Fear Revealed videos from the website played out on the screen.