"What are you doing here, Larry?" Jon asked, a bit surprised.
"Oh, you know," he said casually, then he held up the rock, "Just causing trouble."
"Put the rock down, Larry, you don't know what it can do," Jon said tensely.
"Oh, I know exactly what it can do. As well as what it can't do. I found the little note your grandfather left. You really have nothing to worry about."
"Larry, I want you to give the rock back. You could end up doing some terrible things."
"But that's exactly my intention, Jon. I wish..."