“Quick,” whispered Crabb; “your bandanna around his legs.”

Burnett surprised himself by the rapidity and intelligence of his collaboration. A handkerchief was slipped into the man’s mouth, and before his eyes were fairly opened he was gagged and bound hand and foot by the cord from the baron’s own dressing gown.

From a pocket Crabb had produced a revolver, which he flourished significantly under the nose of the terrified man, who recoiled before the dark look which accompanied it.

Crabb seemed to have planned exactly what to do. He took a bath towel and tied it over the man’s ears and under his chin. From the bed he took the baron’s sheets and blankets, enswathing the unfortunate servant until nothing but the tip of his nose was visible. A rope of suspenders and cravats completed the job.

The Baron Arnim’s valet, to all the purposes of usefulness in life, was a bundled mummy.

“Phew!” said Crabb, when it was done. “Poor devil! But it can’t be helped. He mustn’t see or know. And now for it.”

Crabb produced a bunch of skeleton keys and an electric bull’s-eye. He tried the keys rapidly. In a moment the dispatch-box was opened and its contents exposed to view.

“Carefully now,” whispered Crabb. “What should it look like?”

“A foolscap-shaped thing in silk covers with dangling cords,” said Ross. “There, under your hand.”