Five young and ambitious rookie cops continue to navigate the emotional trials and tribulations of their professional and personal lives. Last summer these rookies hit the streets for the first time with their training officers and learned how to walk the thin blue line. Now the training wheels are off. More experienced, they're ready to kick some serious butt. But these rookies are just beginning to realize there are no shortcuts to being successful at this job. And when you're a rookie officer, a little knowledge is a dangerous thing, as they discover.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
Andy's world explodes as a result of a seemingly senseless act of violence during a concert. When she sets out to unravel the details, she comes into direct conflict with Luke's former partner, Detective Jo Rosati, a new detective with 15 Division. As Rosati investigates the case, sparks begin to fly between her and Luke. Dov and Chris take charge to find out who the shooter is and Swarek debates whether or not to rejoin Guns & Gangs.