The source provides an extensive overview of The Walking Dead (TWD) franchise's resilience and expansion, particularly focusing on the spin-off series, The Walking Dead: Dead City. It highlights the continued success of the post-apocalyptic universe through various interconnected shows like The Ones Who Live and Daryl Dixon, noting that this "modular" system has kept the franchise thriving since the main series ended in 2022. The central news is the casting of acclaimed actor Raúl Castillo in a key recurring role as the enigmatic Luis for Dead City Season 3, which is currently filming in Massachusetts. This addition is viewed as a significant strategic move intended to introduce star power and a crucial new narrative arc that will impact the uneasy alliance between main characters Maggie Rhee and Negan. The source details the show's setting in Manhattan, its evolution through its first two seasons, and AMC's commitment to pushing the franchise toward a potential 2026 premiere for the highly anticipated third season.