"Oh, I'm not the police, if that's what you're worried about." He unzipped the folder, opening it up and pulling out a few papers. "Or a detective, or...anything, really. I'm going to go and and guess that you'd have no idea why I'm here..."

He tossed a set of stapled sheets on to the bed. Ethel might recognize the subject...from a couple years ago.

"My name's Robert Callaghan. A friend had me read some of your work. I just wanted to know why you hadn't applied it here."

The paper in question has to do with some vehicular engineering. Truth be told, Robert very well knows why- the kind of concepts express within it aren't exactly the sort that your every day street racer could pull off, not without some sort of sponsor or connection.