“Humph! shut,” he said, with a bitter laugh. “Jem’s parting act of kindness; he must have been the last.”

“Where does that door lead?” cried Chester, as Marion uttered a sigh indicative of recovery.

“To safety, doctor,” said the young man, sadly. “Foxes always have a second hole, and a way of using it.”

He drew a key from his pocket, flung open the door, and made room for his companion to bear his sister into the square lobby, which was littered with wedges, the powder tin, pistols, keys, hammer, and the other contents of the portmanteau standing in one corner, while in one spot a quantity of sawdust seemed to have been spilled.

All was plainly seen by a bright reflected light which shone out from the small glass bulb in the ceiling, shedding a strange glow, while the odour of exploded powder struck on Chester’s nostrils at once.

As soon as they were inside, Robert calmly drew the door close, and just then Marion opened her eyes and looked wildly from one to the other.

“Where am I?” she said faintly.

“Where you have never been before, sis, but quite safe,” replied her brother. “There, don’t look like that; the doctor and I are friends.”

“Ah, I remember now,” she cried wildly, and she struggled to her feet, and seized her brother’s arms. “Oh, Rob, what have I done?”

“The best thing you ever did in your life. I am glad it has come to an end; but I must be off. I can’t face the dock. Too great a coward, I suppose, dear. There, God bless you! I hope you’ll be very happy now.”