“Is the side door locked?”

“No.”

“Lock it. The back door, of course, is.”

“Yes, the cook attended to that.”

“I want a few minutes all by myself. Help me, Hexford. If Dr. Perry has given you no orders, take your stand upstairs where you can give me warning if Mr. Cumberland makes a move to leave his post, or the nurse her patient.”

“I’m ready; but I’ve been in that room and I’ve found nothing.”

“I don’t know that I shall. You say that it is near the head of the stairs running up from the side door?”

“Just a few feet away.”

“I would have sworn to that fact, even if you hadn’t told me,” muttered Sweetwater.

Five minutes later, he had slipped from sight; and for some time not even Hexford knew where he was.