Fright Nights IV was the 4th annual Fright Nights event at Six Flags Over Mid-America. It ran Fridays, Saturdays, and Sundays from October 18 through October 27, 1991.
Haunted attractions[]
- Terror Train (Six Flags Railroad)
- Burrows Mansion (River King Station 2)
- House of the Living Dead (Time Tunnel)
Hours[]
- Fridays: 6:00 PM to midnight
- Saturdays: 10:00 AM to midnight
- Sundays: 10:00 AM to 6:00 PM