Aaron Moselle reports on the first day in the trial of the 2013 Market Street building collapse in Philadelphia. Bobby Allyn brings the story of a temple professor acquitted of espionage charges, and his daughter who calls the ordeal a product of profiling. Todd Bookman reports on Steve Case, AOL co-founder, and his recent stop in Philadelphia on his tour to find the next big startups. Mary Wilson brings the story of how the Pennsylvania State Police have tried to boost racial diversity within the ranks. Peter Crimmins reports on the opening of the new Fillmore music venue, and the artist who made its very first poster.