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.

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.

Walker realizes his life is at risk and confronts Captain James who confesses to him the real reason Micki went undercover. The Davidsons' return home sets Abeline on edge as there is dark history between the two families.

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.

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.

Tensions run high when Walker and Liam investigate a cold case together. Micki, still on desk duty, is working through her grief while slowly easing her way back into the field. Trey tags along for a fishing trip and gets a lesson on love. August makes a discovery that could lead to answers about the feud between The Walkers and The Davidsons.

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.

Cordell and the Walker family carry on with a day at the Rangers fair, but it's not all fun and games when Cassie runs into familiar faces from her past. Meanwhile, Abeline attempts to clear the air with Geri and Colton tries a new approach with Stella.

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.

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.