Every minute that passed made Dean more and more nervous. His son wasn't in this room, he wasn't in that room, and he wasn't in Claire's whole house. For one minute when they reached his parent's room and saw the door ajar, he felt a moment of hope. Maybe, just maybe, Ben was in there. It made sense, as maybe seeing his Dad passed out was scary, and he went in there to spend time with his grandma or grandpa and crashed.
But the little boy wasn't in that room either. Instantly, though, Dean noticed that something was very, VERY wrong. Though John Winchester didn't leave his desk immaculately clean, there was a difference from his level of controlled chaos and the discarded papers and books that were laying haphazardly on the desk. It looked like someone had rushed through...and for a moment Dean thought maybe they had been robbed, but nothing else looked out of order. The house was well protected by measures they had all thought of, and yet, there was always that chance. Still, he went quickly to stand in front of Claire as he went to the desk, not wanting her to see what might very well be some sort of ransom note or threat.
He picked up the sheet of paper, his eyes quickly reading Ben's words, and then he cursed soundly, crumpling the paper between his hands as he held too tightly to it.
"Goddamn it," He said, when the streams of curse subsided for a moment after he read the thing for the tenth time. "he's gone after Ruby." There wasn't even a pause for breath as Dean grabbed her hand and headed for the garage.