"They haven't shared much," Sam admitted. And he had been far too preoccupied with the discrepancy between his and his brother's memories, with the mystery of how they'd arrived there, with figuring out just what was going on to hunt down the information on his own initiative.

He grimaced as he realised the lapse - something he'd never do on a normal job, he knew - and resolved to repair it when next he had a chance.

However, he was not left much time to self-chastise. The man ahead caught the hunter's attention, and Sam's gaze stayed fixed bemusedly on the back of the obscuring bus seat for a moment. At Emma's question, he shook his head. "I've never met him," he replied, a touch apologetic. "Seemed spooked by something."

It was not, quite, a question.