Derek frowned, studying the blond, who had turned a whiter shade of pale, and reached a hand across the table to curl his fingers around the boy's wrist, his thumb against this pulse.
"Breathe, Alcuin," he instructed.
He wasn't sure what, if anything, had triggered the boy's panic, but he was fairly experienced at dealing with panic attacks at this point.
"Breathe with me," he continued, speaking calmly, and took an exaggerated deep breath.