Cold Case

Season 4, Episode 15

Episode Title: Blood on the Tracks

Air Date: 2007-02-18

Overview:

Lilly investigates the deaths of a married couple who perished in 1981 when a supposedly accidental gas-leak explosion set their house on fire. The case is reopened when fragments of a bomb are discovered at the house during renovations. Back at headquarters, Stillman takes care of his 4-year-old grandson.