On a chilly night, Shadows lurk behind the curtains 2

"Kekekekee... It's working," the man with the cloak whispered, his voice dripping with eerie satisfaction. A sinister shadow draped over the lifeless body as he retrieved a black vial from his concealed stash. "At long last, the time has come to utilize this..." A malicious grin stretched across his face, revealing rows of gleaming white teeth beneath the cloak's hood.

/PUFF/

"But it seems the quantity is still insufficient," muttered the man as he poured more of the viscous black liquid onto the motionless form sprawled upon the slab. The dark elixir cascaded over the corpse, pooling around it in macabre patterns.

As the liquid seeped into the ground, wisps of smoke began to rise, swirling and coiling like ethereal serpents. The room was soon engulfed in a dense, impenetrable shroud of black gas. Visibility vanished, rendering even one's own hand an invisible enigma.