Tell me which character's perspective you'd like to dive into next.

Suddenly, a woman emerged from the ditch, her movements jerky and unnatural. Her skin was a map of dark lines, and when she looked at them, there was no humanity left—only a primal, screaming hunger. She lunged.

The town was a graveyard of the living dead. Amidst the chaos, they found a young deputy, Jenna Olson, terrified and clutching a shotgun in the local hospital. She was protecting a newborn baby—a girl whose mother had succumbed to the darkness moments after birth.

Sam didn't answer immediately. He was staring at the road ahead, where the asphalt seemed to shimmer with heat that shouldn't be there. "We let it out, Dean. We actually let it out."

"We didn't have a choice," Dean snapped, though the conviction was hollow.

They climbed back into the car, the rumble of the engine the only familiar thing left in a world that had suddenly turned alien. As they drove toward the nearest town, Superior, Nebraska, the signs of the "Darkness" began to manifest. It wasn't monsters in the shadows; it was a sickness.

Dean swung a tire iron, the metal clanging against her skull, but she didn't drop. It took three more hits to ground her. He stood over her, chest heaving. "These aren't demons, Sammy. They’re 'Rabids.'"

In the quiet of a darkened hallway, Dean looked down at the baby. He felt a pull, a strange, magnetic tether he couldn't explain. He moved the infant’s blanket aside, and his heart stopped. There, on the baby's tiny shoulder, was the mark. The Mark of Cain.