Walker 4x08 "Witt's End" Season 4 Episode 8 Promo - TUNNEL VISION - Liam (Keegan Allen) express his concerns about Walker (Jared Padalecki) to Trey (Jeff Pierre). Walker becomes more invested in the case as Captain James (Coby Bell) asks him to take a break. Stella (Violet Brinson) continues her search for the necklace and starts putting together the pieces of the mystery. August (Kale Culley) goes to his dad for help with a school project. Meanwhile, Cassie (Ashley Reyes) and Detective Luna (guest star Justin Johnson Cortez) take their relationship to the next level. Sharon Lawrence guest stars. Stephanie Martin directed the episode written by Aaron Carew (408). Original airdate 5/22/2024. Subscribe to tvpromosdb on Youtube for more Walker season 4 promos in HD!