Could it be that the zombies here had migrated, just like what he and the others witnessed on their way to City A's hidden base? But as far as he knew, those migrating zombies always returned to where they came from, so that didn't seem to fit. Or… could it be that something had driven them away?
Sparrow forced himself to stop thinking—there was no way to confirm whether his suspicions were correct or not, and dwelling on them would only mess with his mind. Instead, he focused on the scene before him.
He noticed the mutated zombie make its move just as the patrol team began retreating back into the shelter. It slipped through the area with unsettling precision, navigating every blind spot as if it already knew them by heart.
Its movements were deliberate, almost practiced, like it had studied the guards' habits and behavior, allowing it to approach the shelter's wall without drawing a single glance.