Gary carefully lifted the pizza boxes out of the car and walked to the house. On the door was a note: ‘Come right in!’

Inside, Gary froze when he entered the living room. Enclosed by a pentagram painted in what he hoped was paint was a hooded figure.

“Thanks man,” said the figure, taking the pizza and handed Gary money and a scrap of paper. “Keep the change, and give me a call, okay?”

Gary returned to the car with shaky legs and a phone number. That was one of the stranger customers, but at least they had tipped well.