TIME IS OF THE ESSENCE AS THE TEAM TRIES TO TRACK DOWN DRUG MULES BEFORE THEY BURST – Atwater (LaRoyce Hawkins) and Burgess (Marina Squerciati) are given a new patrol car, but are challenged with keeping it brand new. A run in with a psychotic woman leads the Intelligence Unit to discover a drug smuggling operation which has put several girl’s lives in peril. Voight’s (Jason Beghe) overprotective act with Lindsay (Sophia Bush) leads her right where he doesn’t want as she also helps to keep Justin out of trouble. Meanwhile on stakeout, things get tense between Olinsky (Elias Koteas) and Ruzek (Patrick Flueger) as Olinsky tries to teach him the finer points of surveillance. Jon Seda, Jesse Lee Soffer and Archie Kao also star. Robin Weigert, Amy Morton, Josh Segarra and Joe Reegan guest star.