Bob Lasar's face had grown livid with rage. His anger was rapidly getting beyond all bounds. Tad observed it and saw the storm coming. It arrived a moment later when Lasar whipped out a revolver.

Before Mr. Marquand could make a move to draw his own weapon Bob had aimed his weapon and pulled the trigger.

Tad, instantly divining the purpose of the man when he saw his hand fly to the pistol holster under his coat, sprang forward.

There was a deafening report. A bullet buried itself in the ceiling of the room.

Tad had struck up the desperado's arm just in the nick of time, thus preventing a terrible crime. But the end was not yet. There were five more bullets in the cylinder of the weapon, as the lad knew full well.

He grabbed Lasar's arm, hanging on desperately, at the same time trying to get a wrestling hold.

The weapon went off again, this time sending a bullet into the floor.

"Look out for the other fellow!" shouted Tad.

Mr. Marquand already had done so. Comstock had just made an attempt to draw his own weapon when Marquand threw himself upon the man. The two went crashing to the floor, while Tad and Lasar were battling all over the room, the latter's weapon barking viciously every little while.

Lasar was much more powerful than his slender antagonist, but Tad being very quick on his feet managed to keep out of the way of the revolver and at the same time to avoid being thrown.