Jose Diaz is charged with murder, robbery, and related offenses in the 2013 killing of Carol Ambruster in her Germantown apartment. When retired Villanova University astronomy professor Carol Ambruster was stabbed to death in her Germantown apartment on Dec. 9, 2013, what was expected to be a normal day turned into “a nightmare,” a prosecutor told a Philadelphia jury Tuesday. Upon returning to her second-floor apartment at 5501 Wayne Ave. about 5:50 p.m., Ambruster, 69, encountered Jose Diaz, a handyman who worked in the building, Assistant District Attorney Jason Grenell said. “Mr. Diaz got a knife from Ms. Ambruster’s kitchen,...
