Larry Wilson arrived at his friend’s house in Tampa, Florida, and knocked.  No one came to the door, so Larry knocked again and waited. There was still no answer.

He went around back thinking his friend might be on the patio but, as Larry came around the corner of the house, he heard sounds and strange voices in his friend’s shed and immediately suspected something was up. The shed was where his friend used to store tools and supplies for construction work.

Larry made a...