A third bus will tour East Baltimore to see where some 600 formerly blighted rowhouses have been restored and passengers will learn about a sprawling redevelopment effort to turn 88 acres north of Johns Hopkins Hospital into an employment hub with homes at a variety of price points. They’ll explore the aftermath of some high-profile crimes, such as the 2002 firebombing that killed a mother and father and their five children after the family called the police to complain about drug dealers across the street. It is now the site of the Dawson Safe Haven Center, named in honor of the slain family and built on the site of their home.