“We must send for help and carry them both out of danger at once,” he said.

“Danger? But there is no danger,” exclaimed the doctor.

“But the fire?” gasped the boy.

“There is none. It was either the overwrought nerves of a silly woman that started the panic, or else there was some malicious design underlying the whole thing.”

The thought of what he had seen as he stood in the shadow of the saloon stairway rushed across Jack’s mind: Miss Jarrold’s sudden appearance and then the scream of fire. Could it have been possible that this was the thing that Sam had overheard her and her uncle debating? That, taking advantage of the panic they knew would be caused by such an alarm in the dead of night, Jarrold had schemed a way to enter Colonel Minturn’s cabin?

“Will you come into Colonel Minturn’s cabin with me at once, doctor?” asked Jack.

“Certainly, my boy. But,” and the doctor stared at him in amazement, “what has happened to you? Your face is bruised and marked. Have you been fighting?”

“A little bit,” said Jack grimly.

“With whom?”

“With a man I believe to be a consummate scoundrel. By the merest accident on earth, I happened along here just in time to frustrate what I believe to be a plot against Colonel Minturn.”