Sam's fingertips came away a little bloody when he lowered them from his shoulder, but he could tell it wasn't a bad wound. "I'm alright," he reassured Alan, since the other man looked worried about him. "I've had much worse."
But he was grateful for the gauze, anyway; he took it and pressed it against his shoulder. "We need to melt that purple candle down," he said, gesturing to it. "Then we'll turn off the lamp and cover the bulb with it. I'll carve a few more of these symbols into it just to seal it in nice and tight. Then we bury it somewhere deep, preferably encased in iron and sealed in cement."
That would stop anything evil from getting its hands on the shadow and releasing it again. It was all in there, Sam was sure; if there had been any darkness in Alan, it would have been expelled from him by the spell already, so there was no need for another exorcism. And the Taken shouldn't behave the way they did without the shadow controlling them, if they even existed without the shadow inside them at all. "That should be it."