Law & Order: Criminal Intent: Season 4, Episode 7

4 - 7: Magnificat

Horrified Detectives Goren and Eames contemplate a car bomb blast that killed three young boys and injured their mother and surviving brother as they check out suspicious Arabic-speaking men -- and the family's controlling husband/father 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.