OKLAHOMA CITY, OKLA (KOKH) – Fright Fest is returning to Frontier City starting Sept. 14. Haunted houses, performances, rollercoasters in the dark, and Halloween treats can be enjoyed until Oct. 27. The themes for this year’s haunted houses are Auto Despair Service,Midnight Mausoleum,Forgotten Freaks,Devil’s Hollow, andCadaver Castle. During…