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

If you want to explore more about this specific era of the show: The psychological bond between Sam’s secret struggle with the Rabid infection Castiel’s torture at the hands of the angels

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. [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. If you want to explore more about this

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. They climbed back into the car, the rumble

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.

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