Harrison Ford and Liam Hemsworth Film at 40,000-Square-Foot House in Plymouth Whitemarsh

Harrison Ford, Liam Hemsworth, Gary Oldman and other members of the cast and crew of Paranoia were in Plymouth Whitemarsh on Thursday and will be again on Friday and Monday. The group is filming scenes at Arbor Hill—the 70-acre estate of Dennis Alter (the former Advanta CEO). The property features a 40,000-square-foot stone house and a 20,000-square-foot ‘playhouse.’ Really. It’s on the market for $30 million. Alter paid between $50-80 million for it in the late ’90s. [Patch]