Ben goes through Riley's pockets, finding his wallet. Inside he finds: $152, two credit cards, a small photo of a youngish woman in a summer dress, and an identity card. The card states that Jonas Riley is an agent for and organization called the Hoffmann Institute, and includes a passport style picture of the man lying unconscious on the table in front of Ben, prior to his hair starting to recede.
The trucker looks over to Daunte, seeming to take some heed of his words (Diplomacy check: 13 + 10 = 27).
"Perhaps you have a point, but even if I wanted to call off this creature, I could not. My master made sure I was safe from his summonings, but I do not have the knowledge to control such a beast. And do you think I would be so foolish as to waste such forces as these on an out of the way rest stop? No, your Mr Riley must have triggered it somehow."