This is the second time Derek helps someone who is booby trapped inside his or her car on the drivers seat. The previous time was when he helped Dr. Betsy Brazier in Empty Planet (2006)
Allen Archer asks about the pregnant woman while being interrogated and is told that she is fine and about the baby "it's a boy." Lex Medlin, who plays Archer, was the actor in the Geico commercial where he calls his parents collect after just having a baby and says his name is "Bob Wehadababyitsaboy."
The news van outside the home for first report shows KFZB on the side. While this would normally not be a local TV station for Indianapolis, as all TV stations east of the Mississippi River usually start with "W," stations that started out west of the Mississippi and moved would keep their original call letters.