"Can you take us there now?"
"Sorry, but I've got a job in quarter of an hour."
"We'll pay you double fare," put in Sam. "Get somebody else to take that other job."
To this the coach driver readily agreed, but to make the arrangement took time, and it was six o'clock before they were on the way to Dr. Karley's place.
When they reached the sanitarium they found the building dark, with the shutters on the ground floor tightly closed. Dr. Karley answered Tom's summons in person.
"Yes, the parties were here," he said smoothly. "But I could not accommodate them, and so they went elsewhere."
"Elsewhere?" echoed Tom.
"Exactly, sir."
"But our coach driver says they got off here. He was the one who brought them."
At this announcement the face of the physician changed color for an instant. But he quickly recovered himself.