Mark looked around. There was noone in the dark hallway. On the floor was a small glass vial, about an inch tall, with a screwcap, like he used to see in his science lab at school. Attached to this vial was a scrap of paper.
He picked it up, and closed the door. Turning the paper over, there was a small note:
"Dear Mark.
This is a gift to you, which will grant your deepest, most secret wish, of which we are aware. Dissolve in 100 ml of water. Drink within 10 minutes of preparation.
Yours, M
PS: Enjoy the effects!"
Mark scratched his head, confused, but for some reason, confident in the small glass container he held in his thin, small hands.
He decided to...