The detective set his jaw.

He started off on a new tack.
"Does this belong to you ?" he said suddenly, plucking from his pocket the battered gold watch that Beresford had found and waving it before the Unknown's blank face.
The Unknown stared at it a moment, as a child might stare at a new toy, with no gleam of recognition.

Then-- "Maybe," he admitted.

"I--don't--know." His voice trailed off.

He fell back against Bailey's arm.
Miss Cornelia gave a little shiver.