Gale coming clean to Geri about the past forces Cordell to relive a part of his he'd buried long ago, and Trey considers Captain James' latest offer.

When he hears that Serano is out on bail, Dan panics and asks Liam for help. Liam doesn't trust Dan but Dan makes him a tempting offer that would put Serano behind bars for good. There is just a small catch - Liam can't tell Walker what's going on. Meanwhile, Geri decides to have an open mic night at the Side Step and encourages August to hit the stage.

A feisty officer Perez mistakes Cordell for a suspect. Trey offers to help Liam with a project. Meanwhile, Colton is struggling with his feelings for Stella.

Stakes are high as Cordell, Cassie, Captain James and Trey all realize Grey Flag's plans and partnerships extend deeper than they once thought. While the Walkers plan for the Mayor's Medal Ceremony, Cordell struggles with missing out on time with his kids as he focuses on trying to keep the whole city safe.

Walker has concerns over Micki going too deep undercover and wants to keep a close eye on her and the possible new informant. Captain James and the new District Attorney work together trying to close the case to bring Micki home. Stella and Colton Davidson team up to solve a mystery while under the watchful eye of Trey and come across an interesting obstacle on their way home.

Cordell and James make a shocking discovery. Meanwhile, Stella and August have a traumatic afternoon and Liam takes a concern to the Davidson’s door.

While setting up protective detail on Trey, Captain James is shot and left in critical condition. Walker takes on the role of interim Captain and turns to an unlikely source for help.

Walker’s world is shattered after receiving shocking news that changes everything.

Stella and Colton plan a Walker / Davidson family dinner. Meanwhile, Liam gets an unlikely ally when trying to prove that the Davidson's were up to no good on the day Cordell raced for the ranch and Cassie vows to learn the truth about the last case her previous partner was working on.

Things are still tense between Walker and Liam after Liam called in a false warrant on Dan Miller. However, things take a turn for the worse when Captain James informs the brothers that Serano’s lawyers are using Liam’s mistake as a way to set the criminal free, putting the entire Walker family in danger.

As Cordell and Cassie dig deeper into the deaths of his military buddies, he uncovers some inconsistencies that may reveal truths he's not ready to face. Meanwhile, Trey is presented with a new opportunity, Captain James receives some news from Kelly, and Bonham is still at odds with the rest of the family.

Cordell reaches a breaking point with Denise who sets her sights on revenge and the tensions between the Walker and Davidson families finally hit a fever pitch.

While Cassie and James lead the charge to find Walker, the situation goes from bad to worse when Liam also goes missing. Meanwhile, Stella and August pursue a lead of their own.

While Geri does her best to keep the Walker family’s collective chins up, Walker and Cassie look for any clues to help Bonham in his hour of need.

Captain James and Liam follow up on a tip regarding Emily’s murder. The duo head to Mexico for more answers but decide to keep their trip a secret from Walker. Meanwhile, Trey escorts Stella, August and the girls soccer team to an away game but when things take a dangerous turn Trey, Walker and Micki have to team up to save the kids. Micki learns some shocking news.

After a shocking revelation, Cordell and Cassie set off to find out more about Grey Flag’s nefarious plans. Liam's and Stella's plan for the horse rescue appear to finally be coming together when a big-time philanthropist offers her support, and the Walker family joins forces to move the project along quickly. Trey's new assignment lands him in unfamiliar territory and a new partner could compromise his focus.

Walker tries to make up for lost time and wants to be what Geri deserves. Cassie and Trey have their final interviews for the lieutenant position. Captain James advises Cassie and Trey. Stella discusses with Liam what she may want for her future. Bonham and Abby admit to each other what they really want for the next phase of their lives. August's graduation brings everyone together to celebrate.

Walker invites Gale Davidson to participate in the chili cookoff at the Side Step to try and make amends after years of their families feuding, however Abby isn't too pleased with the gesture. Micki and Trey work on reconciling their relationship when she comes home after her deep undercover operation.

Geri is presented with an interesting offer, and Liam jumps in to help.

When confronted by the Davidsons, Liam shares an old land survey which could spell trouble for the Walker family, and Bonham reveals one truth from the past while covering up another. Meanwhile, Cordell has news of his own he would like to share with the family if he can get the chance.

Walker and Micki investigate a bomb threat at the school that targeted Liam and Stan. Abeline and Bonham plan a vow renewal, and Trey’s mother comes for a visit.

Cordell Walker returns home to Austin, Texas, after being undercover for two years, only to discover there's harder work to be done at home.

Walker continues to try to reconnect with his family but finds that his kids have developed new routines with Liam. Back at work, Captain James tells Walker he needs to get recertified to be a Ranger, but old memories of Emily hinder his progress. Micki investigates a suspicious fire.

Trey and Liam try to help Walker figure out his next steps with Geri; Liam confides in Walker.

James, Cassie and Trey appear to make some headway in their investigation.

Stella continues her search for the necklace and starts putting together the pieces of the mystery.

The show flashes back to the days right before and after Emily's death and how the entire Walker family dealt with the sudden tragic loss.

Walker’s life gets more complicated when his childhood best friend, Hoyt Rawlins, returns to town. Abeline is thrilled to have Hoyt home but Geri has conflicted feelings for her ex-boyfriend. Meanwhile, Micki has her suspicions about the real reason Hoyt returned to town.

Walker makes good on his promise to Liam to finally discuss captivity, and painful details from the past inform the present to help the Rangers eliminate a dangerous threat. Meanwhile, a new case forces Cassie to confront her aversion to dating.

It's Walker's birthday and Geri is pulling out all the stops, but her plans are thwarted.

Walker, Cassie and Trey are charged with keeping an 80-year-old grandmother and witness safe.

Walker, Trey and Cassie prepare for what Captain James has in store for them at HQ.

Twyla is tapped to assist the Rangers on a case as she and Cordell are beginning to grow closer. Meanwhile Stella re-evaluates her feelings for Todd and Colton while Geri extends an olive branch to Denise.

Micki’s real mother, Mercedes, tries to make amends with her daughter but Micki doesn’t want anything to do with her. Walker steps in to help and lands in a heap of trouble. August suffers from PTSD after what happened at the Ranch.

Walker takes Stella and August on a road trip to discuss some devastating news. Meanwhile, Captain James enlists the help of Micki and Trey to find a missing military veteran.

Cassie, James, Trey and Luna start to put together the pieces of the Jackal case.

With the Sidestep now in their name, Walker, Stella and August put their stamp on the place. Liam turns to Bonham for advice on a career move, while Micki and Trey work through the aftermath of his injuries after the hurricane. Stella confronts Clint about Trevor and his response prompts Stella to make a dangerous decision that will leave a permanent mark on the Walker family.

The Walkers pull out all the stops to celebrate Abeline and Bonham's anniversary. Cassie finds a piece of her past and Cordell needs a favor from Geri.

During a would-be simple assignment, a misunderstanding causes Walker and Cassie to examine where they are in life and what lies ahead. Meanwhile, August strives to roll with the cool kids to disastrous results and Trey struggles with what being a Ranger means for his relationship with his mother.

Walker tells his family about the surveillance cameras in their home and partners with Denise to lure out whoever is watching them. Liam doesn't trust Denise, or her husband Dan, which frustrates Walker who is trying to mend the rift between the families. Micki continues to deal with the ramifications of her time undercover.

An old friend returns with a shocking surprise for everyone, and Cordell is forced to come to terms with the decisions he’s made and how it’s affected the ones he loves most. In the aftermath of the devastation caused by Grey Flag, Trey’s left feeling like an outsider, but a new case will force he and Cassie to overcome their issues.

In the aftermath of the Walkers' dramatic Thanksgiving dinner with Abeline’s traumatic hospitalization, the family rings in the new year with members of the Walker family resolving to make better choices across the board. While Cordell throws himself into family matters, Cassie pulls Trey into a case tracking down an elusive tech mogul. But Cassie gets the sense she’s in hot water with Captain James.