“Very well, sir,” was the reply; “we have the warrant, and have given the usual notice to whoever may be hiding inside. Burton!”

The Sergeant stepped forward, placed the leather bag on the floor, and stooping, opened it, revealing a number of burglarious-looking instruments.

“Shall I try to cut through the panel?” he asked.

“No, no!” cried Monte Irvin. “Waste no time. You have a crowbar there. Force the door from its hinges. Hurry, man!”

“It doesn’t work on hinges!” Gray interrupted excitedly. “It slides to the right by means of some arrangement concealed under the mat.”

“Pass that lantern,” directed Burton, glancing over his shoulder to Gunn.

Setting it beside him, the Sergeant knelt and examined the threshold of the door.

“A metal plate,” he said. “The weight moves a lever, I suppose, which opens the door if it isn’t locked. The lock will be on the left of the door as it opens to the right. Let’s see what we can do.”

He stood up, crowbar in hand, and inserted the chisel blade of the implement between the edge of the door and the doorcase.

“Hold steady!” said the Inspector, standing at his elbow.