[s11e1] Out Of The Darkness, Into The Fire -

The Darkness wasn't just a force of nature. It wasn't just a cloud of smoke. It was a person. And he was holding her in his arms.

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." [S11E1] Out of the Darkness, Into the Fire

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. The Darkness wasn't just a force of nature

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. And he was holding her in his arms

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.