“Ah,” muttered the companion aside to herself, “if I were a man and had a knife I would kill you!” and she shook her clenched fist at the invisible traveller next door.

When Carlisle station was reached Dr. Dalrymple stepped quickly from his carriage, thinking to catch a glimpse of the inmates of the adjoining compartment.

The curtains, however, were closed, and no sign of life was visible.

“Asleep, I imagine,” soliloquized the Doctor, “well, I suppose I may as well have some breakfast,” saying which he sauntered in the direction of the first-class restaurant.

When he returned the window of the carriage next door was in the same condition. “Still asleep,” he murmured as he lit his cigar, and the train moved outward.

Dr. Dalrymple was in error, however, for the change of carriage had been effected while he was at breakfast and his whilom companions were now a dozen carriages to the rear.

At the next station, the first on Scotch soil, noticing the adjoining door open, Dr. Dalrymple inquired of the guard if the ladies were still inside the carriage. “No, sir, they left at Carlisle,” replied the guard, an answer literally correct and yet giving, and intended to give, the impression that the ladies had left the train at the station named.

“Well, well, I wonder who they were—something unique, I should say——”

“Yes, sir, quite so,” said the guard as he left the door, adding to himself, “I seem to have more than the average of unique people this trip.”

CHAPTER V.