Carrie receives a phone call at the station from a man saying that he will kill someone in 16 minutes. She assumes it to be another prank the team is playing on her until he admits to killing someone the day before in New Jersey. Carrie is able to determine the location from background noise but the team arrives too late as a second man is killed.
This begins a back and forth battle of wills between the two while the team rushes to find a connection between the two dead men. In the meantime, Carrie plays the sniper's game in the hopes of avoiding further deaths.