4. DUFF OVERLOOKS A CLUE
The next instant a young man was at Duff’s side, a good-looking American with frank gray eyes, now somewhat startled. Removing a small, pearl-like object from a bottle, he crushed it in his handkerchief, and held the latter beneath the nose of Mr. Patrick Tait.
“Amyl nitrite,” he explained, glancing up at the inspector. “It will bring him around in a moment, I imagine. It’s what he told me to do if he had one of these attacks.”
“Ah, yes. You are Mr. Tait’s traveling companion?”
“I am. My name’s Mark Kennaway. Mr. Tait is subject to this sort of thing, and that is why he employed me to come with him.” Presently the man on the floor stirred and opened his eyes. He was breathing heavily and his face was whiter than his shock of snowy hair.
Duff had noted a door o
