Death by the Snap.

Then, suddenly, he screamed.

Blood came out of his mouth. His body twisted in pain. A moment later, the other two assassins also screamed and shook uncontrollably.

"What's happening?!" Professor Treneth shouted, rushing forward.

"Are they dying!" someone said. "Is it poison?!"

"No," said one of the professors. "It's a seal… A death trigger."

But deep behind the group, one professor silently stepped back into the shadows, his hand still faintly glowing from the snap he made moments ago.

And no one saw it.

Professor Aelra narrowed her eyes. "The Demon Organization? Are you saying it's real?"

The older assassin finally spoke in a raspy tone, his voice like sand scraping stone.

"Realer than you think," he said. "We've seen things—rituals, forbidden spells, creatures not of this world…"

"Because we have been working under a devil contractor for three years."