POTSDAM — Potsdam Chamber of Commerce's Fright Night Thursday, Oct. 29, 5-8 p.m. Free, family-friendly event brings hundreds of families downtown for safe trick-or-treating, activities and Halloween fun. Will take place along Market and Raymond streets, with additional Trunk-or-Treat stations at the Market Square Mall, 22 Depot St. Costume contest check-in will take place from 5 to 6 p.m. at JobsRUs in the Market Square Mall.  Additional activities and entertainment will be announced as details are confirmed. Registration is open through Friday, October 16, or until all available spaces are filled. Interested businesses and organizations may register by contacting the Potsdam Chamber of Commerce at (315) 274-9000 or director@potsdamchamber.com.