C.D. gets a visit from her mom and deal with her past.

The Division investigates the murder of Sara Allen who was looking for her daughter. At the scene a note was found telling Sarah's daughter that she was a bad mom but was still looking for her daughter. Magda meets "" a floating inspector "" named Regan (who is filling in for Jinny who is on maternity leave) Magda doesn't like Regan and soon learns that the inspector has a lot of questions to answer. As Magda and Regan look into the murder of Sara Allen Regan is looking at footage of a news report and soon sees a suspect on screen. Kate asks Magda to go undercover at a foster care agency to look for the daughter of Sara Allen only to discover that several children are missing. Reagan does some investigating of her own while serving as a guard for Magda. She carries with her a picture of David (the person she saw on the news report)

Kate suspends Jinny after she shows up to make an arrest drunk and disheveled. Magda, secretly organizes an intervention in the hopes that Jinny will confront her addiction and go to rehab.

Jinny finds love after rehab.

Jinny is the target of a seemingly random shooting. The efforts of her brothers and boyfriend to make her feel safe do little to alleviate her feelings of vulnerability. CD and Angela investigate the murder of a pizza deliveryman. Magda struggles to resolve her conflicts with Peter.

C.D. and Nate investigate a kidnapping. Raina tries to convince a young boy who witnessed a gang murder to testify. Jinny is uncomfortable with helping Magda plan her wedding.

Magda's rejection of a judge's sexual overtures endangers the outcome of a trial in which she is a key witness. Much to C.D.'s consternation, her deceased partner's informant, the only suspect in his death, is brought into custody. Kate and her sister must deal with their mother's deteriorating health together—and face their own troubled relationship.

Magda and Jinny investigate the death of a compulsive gambler. C.D. reveals the truth about her partner's death to Angela, putting their personal and professional relationship to the test. Sparks fly and old wounds reopen when Magda bumps into Ben's estranged father, Gabriel.

In this episode the whole division is trying to find a baby that was in the backseat of a car during a hijacking.

Jinny's Dad is hospitalized which brings the family together. Magda and Gabe are desperate to find a bone marrow donor for Ben as he is not responding to the treatments. Kate gets an offer from Louis that is too hard to pass up, and C.D. and Nate close in on the white supremacist killer terrorizing San Francisco.

A serial killer is homless woman herself.

Kate learns that a coma victim has awakened after nine years. Kate hopes to solve the case with the help of the victim. Also Regan learns that her son David was accused of stalking someone and is also schizophrenic. Now Reagan asks Kate if she can look at the files. Stacey Reynolds tries to help Emma Weber to reconnect with her family she is worried that her son won't remember her after nine years. Emma identifies the person who killed her husband Evan nine years ago from a picture in the newspaper.

While at a gun show peter & Magda find out that a dealer sells weapons.

Magda and Jinny's investigation into the death of a college student exposes the rampant homophobia in the victim's fraternity. The case touches a nerve with Jinny, whose own brother's coming-out unleashes a fury of prejudice in her family. CD and Angela look into a case of alleged elder abuse and a shocking development causes them to question their earlier decisions. Angela learns of CD's marital woes. Kate and her younger boyfriend fight about the state of their relationship, which she wishes to keep secret.

Magda goes undercover as a prison inmate during a murder investigation. C.D. and Angela get more than they bargain for when they take a documentary filmmaker on a ride-along to serve a subpoena. When Jinny meets Theodore's family and ex-girlfriend, her drinking problem resurfaces and threatens to destroy the romantic relationship.

C.D. and Angela investigate an attempted murder and discover that the victim is a former teen criminal who achieved celebrity because of her crimes. Jinny makes a surprising decision about going on a weekend trip with Teddy but gets a surprise of her own. When she is offered a deal that could end her investigation, Angela must make a decision that could end her association with The Division and faces pressure from her husband.

Kate works with Jinny and Magda as they investigate a powerful litigator who is suspected of killing a missing intern. However, the intern eventually reveals herself, alive and well, having planned the entire charade in order to bring down the womanizing politician. Nate and C.D. find out that thousands of dollars were stolen by a man who took the money to pay for his disabled son's medical bills.

Jinny makes a split-second decision that could cost her her job. Ben blames Magda for Gabe's moving out and his rebellious behavoir escalades until the unthinkable happens. C.D. and Nate investigate the death of a high school student whose parents saw a very different side of him than his peers.

Candace (C.D.) and Angela disagree over how to investigate a female murder victim; Jinny thinks she is being punished when she is assigned to a case involving a murdered dog.

Angela looks into the death of a reporter.

Magda and Jinnny try to help an elderly woman admit that she's a victim of spousal abuse. Meanwhile, Raina must face her painful past as she takes on a tough murder case that she mishandled a few months earlier when the killer kills again. Can she cut the mustard this time around?

A 12 year old girl goes to school with drugs.

Kate deals with heated community conflict surrounding an upcoming murder trial, as the entire squad pitches in to interview reluctant witnesses. The gun used to kill CD's former partner is discovered, dredging up painful memories. Jinny's boyfriend wants to take their relationship to a new level. Magda voices concerns about Jinny's drinking. Angela gives her husband a big surprise.

Magda and Jinny investigate a murder witnessed by a Latina gang member whose parents have strived to keep her out of the gang environment. Meanwhile, Angela is investigated for police brutality when she accidentally kills a violent man while subduing him in a choke hold.

Jenny is back from rehab.