Hightown, Chekhov's Gun

Jackie Quiñones returns to her wild partying ways in this season premiere. Ray Abruzzi is the top cop after taking down the New York connection, and imprisoned Frankie Cuevas secures a new partner on the outside.

Jackie failed a urine test, and she was off the force - and it wasn't even her pee! Renee unwittingly lets Frankie back into her life, and Osito defends his turf.

Tempers boil over, and Ray and Alan explode at each other. Frankie learns valuable intel about Osito, and Jackie knows there are even more missing or murdered prostitutes.

Jackie lays out her missing prostitute's case and gets Alan's cooperation to go after Swayzee. From behind bars, Frankie orchestrates his most significant coup yet.

Shane has a new partner. Frankie has intel for Alan on Jorge's murder. Ray and Renee's relationship hits rock bottom, and Jackie completes rehab - no more rogue hero bullshit.

Owen is more dangerous than ever, taking Sarah with him. Jackie unsuspectingly closes in on the prostitutes' killer, and Charmaine and Osito resume their partnership.