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.

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

Walker's lies about the Jackal case finally catch up to him; Stella makes a shocking realization.

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

Walker, Trey, Cassie and Detective Luna explore more leads as Walker starts to become more and more invested. Captain James notices Cassie and Luna growing closer. Stella goes to Bonham for self-defense training and August excels in his boot camp training. Lastly, Bonham and Abby discuss the future with mixed opinions.

Liam express his concerns about Walker to Trey. Walker becomes more invested in the case as Captain James asks him to take a break. Stella continues her search for the necklace and starts putting together the pieces of the mystery. August goes to his dad for help with a school project. Meanwhile, Cassie and Detective Luna take their relationship to the next level.