Without replying the young photographer straightened up and let out with his right arm.
The scar-faced man went backward in such a hurry that he hit the wall opposite with considerable force.
“Help!” he yelled.
After the blow, so well delivered, Bob turned to flee, knowing full well the danger of remaining an instant longer.
Alarmed by the sound of the row, Barker rushed out into the entry, followed by Grogan and Raymond.
“Who is it?”
“Bob Alden! Catch him!”
“That imp! Which way did he go?”
“Out of the door.”
As he spoke, Casco managed to regain his equilibrium, and he followed Barker and the others outside.