The team is still reeling from Jimmy being shot, but now they have a witness they're hiding; under Yolanda's capable leadership, the team is given a special commission to work in all five boroughs, starting with a serial killer and sexual predator.
Chief Wryles breaks his silence and give a glimpse into his master plan, but his world goes sideways when Darius resurfaces and blackmails him; SIU has its hands full with a bizarre murder triangle involving a high-end fashion model.
Tarik and Tessa are becoming leaders in their own right; SIU finds themselves in the middle of a war; key information links Jimmy's shooting to Argon; Tarik and Han go head to head in a battle of wits to find Jimmy's killer.
The SIU's sins come back to haunt them; a highly intelligent and crusading vigilante kidnaps a team member.
Team members' personal and professional lives collide; Argon manipulates SIU to his own ends; Tess and Tarik try to hold down SIU as Yolanda becomes more erratic; Jimmy and Darius finally meet, but it can only end at gunpoint.
An elite task force tackles New York City's most complex and demanding cases.
A community is shattered and everyone's faith in humanity is put to the test when a nun is murdered; secrets, inner demons and dark memories begin to crack the surface of the smooth running SIU.
A new detective joins the team after lending a hand on a previous case; the mayor's son is missing and SIU is brought in to solve the case quietly and quickly.
A new designer drug is killing kids and the team turns the city upside down looking for the dealer; lives are torn apart as the head of the Albanian mob finally discovers who took his money.
Everything comes to a head as Argon closes in on Jimmy and Darius; Jimmy starts to crack as the world closes in around him.
Jimmy Blue is shot and the team reels from shock; Tarik, Yolanda and Tessa throw themselves into solving the case; Miriam claims to know who shot Jimmy.
Yolanda and SIU throw themselves into solving Jimmy's case and find themselves working with Miriam and outside the system.