Possession
The 1981 cult shocker with Isabelle Adjani's infamous subway scene, three nights before Halloween. Not one for the faint of heart, which is the point.
More at Bryn Mawr Film Institute
Young Frankenstein
Mel Brooks's 1974 monster comedy runs for a week at the Lancaster Avenue art house. Showtimes change day to day.
Exhibition on Screen: Dawn of Impressionism, Paris 1874
The Exhibition on Screen film about the 1874 show that gave Impressionism its name, running just over two weeks. Showtimes vary by day.
The Salt Path opens at Bryn Mawr Film Institute
New first-run title landing on the Lancaster Avenue screens September 4. Showtimes at BMFI shift week to week, so look up the day's schedule before you drive over.
Around the same time
STC Fall Tree Giveaway
Abington's Shade Tree Commission gives away free trees for the fall planting season. No time or pickup spot is posted on the township calendar, so the details sit on the commission's tree giveaway page.
Witches of Narberth
Downtown turns into a costumed scavenger hunt, with kids tracking down witches stationed in the shops and collecting treats along the way. The hunt runs the afternoon and ends when the prizes run out.
The Nightmare Before Christmas (1993)
Stop-motion built one painstaking frame at a time, and the one film that covers both holidays. A good first scary-adjacent movie for kids not ready for the rest.