"You're riding for a fall!" John said harshly. "And it's gonna be a damned hard one!"

Sam snorted. Slinging his duffel over his shoulder, he headed for the door.

"Sam!"

Sam sighed. Slowly, reluctantly, he turned to face his father, trying not to look at Dean, who stood frozen in the center of the room.

"If you walk out that door, don't bother coming back," John said, his voice flat, implacable.

Sam blanched and looked at his brother. Wide-eyed, looking shell-shocked, Dean stared back at him but said nothing.

Without a word, Sam turned, opened the door and was gone.