CAR BOMB SHATTERS FUTURE OF YOUNG FAMILY WITH HIDDEN PAST; SAM ROBARDS GUEST-STARS -- Horrified Detectives Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) contemplate a car bomb blast that killed three young boys and injured their mother (guest star Carrie Preston) and surviving brother as they check out suspicious Arabic-speaking men -- and the family's controlling husband/father (guest star Sam Robards) who works in a top-secret electronics firm. The police probe yields shocking connections when they discover the wife's earlier postpartum depression and questionable behavior of the dedicated dad.