You were a nobody, an urchin living in back alleys, struggling each day to get enough money to eat. So, when this stranger offered you 20 bucks just for a few hours of work on the graveyard, you immediately said yes.
You did not understand what you were doing, placing weird stuff on the ground, drawing circles, lighting candles. But then he sat down next to you and explained.
“Tonight”, he said with a mad grin on his face, “I will return my wife to life. We will finally be reunited again.”
When you saw the movement behind him, you ran as fast as you could. You did not turn around when the screaming began… or ended.
Only on the next day, in broad daylight, you returned to pick up his money and pocket watch. You also picked up an old tattered book. You could not read, but recognized some of the symbols you had drawn onto the ground.
Maybe someone else was interested in this? For a few bucks you would even help them set it up…