"It’s a localized infection," Sam whispered, hopping out of the car to inspect a fallen road worker. "Whatever that smoke was, it changed them."
The sky above the Impala didn't just go dark; it bruised, a deep, oily purple that bled into the horizon like ink in water. Sam and Dean Winchester stood by the hood, the ringing in their ears finally fading, replaced by a silence so heavy it felt physical. They had just released the Darkness—an ancient, primordial force—and the world didn't end with a bang. It ended with a breath.
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. [S11E1] Out of the Darkness, Into the Fire
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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. "It’s a localized infection," Sam whispered, hopping out
The black smoke that had roared across the landscape was gone, leaving behind a stillness that felt like a trap. Dean wiped a smear of blood from his forehead, his eyes darting to the tree line. He could still feel the phantom touch of the woman in the black dress, the Mark of Cain gone from his arm but the weight of her words settled deep in his marrow. "Sam," Dean rasped, his voice cracking. "You okay?"
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." They had just released the Darkness—an ancient, primordial
As Sam stayed behind to draw the Rabids away, using himself as bait to find a cure for the infection spreading through his own veins, Dean escorted Jenna and the infant to safety.