Harold and Joyce Foley come home to find their son Eric and the housekeeper brutally murdered. Detectives Lupo and Bernard believe that the Foleys' work on a controversial pharmaceutical study made them targets. Ned Lasky has also been harassing the Foleys. Lupo and Bernard take Joyce on a trip down memory lane to a sorority party 30 years ago to look for some answers. A.D.A's Michael Cutter and Connie Rubirosa work together to track down a key witness.