The Walking Dead: Dead City spinoff raises two important questions: why Maggie's son Hershel has been taken, and why she thinks Negan is necessary for saving him. Trailers show Hershel being dragged away while Maggie watches helplessly. The captors are unlikely to be stealing kids for philosophical reasons, so it's speculated that they have a personal connection to Maggie. Negan's role as the "key" to Hershel's rescue suggests he has a unique insight into the psychology of other bad guys, but this idea has been used before in The Walking Dead. Another potential reason might be that Hershel's kidnappers mistook him for someone Negan cares about.