Philadelphia’s Halloween pop-up bar Nightmare Before Tinsel returns Friday, Sept. 17, kicking off the spooky season again with ghoulishly themed cocktails and horrifyingly Instagram-friendly photo backdrops. Doors open at 4 p.m. t and the bar will remain open through Halloween on Oct. 31. It’s located in the storefront of the former Simpson’s Jewelry at 116 S. 12th St. in Midtown Village.