Episode 84 of "Cold Case"
s04e15 Blood on the Tracks
Title: Blood on the Tracks
Original Air Date: 02/18/2007
Plot Outline:
When an accidental fire is found to have been caused by a bomb, Lilly and the team re-open the 1981 case involving the murder of a yuppie couple. As the case takes shape, Lilly discovers that the yuppie couple, Jack and Johanna, was hosting a college reunion for their tight-knit group of friends the weekend they were killed. As Lilly digs deeper, she uncovers the friends' ties to a '70s radical activist group and a secret from their past that drove the circle of friends apart, a secret so devastating it led to the murder of two of their own.
