It's Walker's birthday and Geri is pulling out all the stops; Walker, Capt. James and Trey tackle a case together; Cassie surprises everyone with her return; Abby asks for Liam's help to bring Stella out of her cocoon.

Walker, Cassie and Trey are charged with keeping acerbic Maybelline safe; Cassie grapples with a big decision and seeks out Geri; Liam tries to help Stella move on; August wants to join an after-school program and asks Bonham for support.

Trey and Liam try to help Walker with Geri; Liam aids Cassie in sifting through the clutter and tells Walker that he's worried about Stella; Stella and Sadie look into recent events; August's bootcamp training is not what he expected.

Walker's lies about the Jackal case finally catch up to him and test his friendship with his old partner Captain James; Cassie works a lead in the Jackal case with Detective Luna and learns a hard lesson; Stella has a shocking realization.

Walker, Trey, Cassie and Detective Luna are all hands on deck with their case; Liam jumps in to assist Geri with an interesting offer; Stella and August help Abby and Bonham and uncover something intriguing; James tries to make amends.

Walker, Trey and Cassie prepare for what Captain James has in store for them at HQ; Stella and August start to put some pieces together; Walker makes plans for his future and Liam questions his brother's motives.

Walker, Trey, Cassie and Detective Luna explore more leads; Captain James notices Cassie and Luna growing closer; Stella goes to Bonham for self-defense training and August excels in boot camp training; Bonham and Abby discuss the future.