The Fifolet is part of Cajun folklore. It is a mysterious and mischievous ball of blue flame that appears deep in the swamp. Follow it to treasure… or a watery grave! The Fifolet Halloween Festival is a week-long celebration of all things Halloween in Baton Rouge, LA. Find your treasure at the Fifolet, where there’s Halloween fun for everyone! Events are added frequently so check back often for updates.