There was an uproar now from the interior of the house. There came the rush of feet along the hall. Another instant and they would be at the door. Massing his strength for the effort, Billy Kane tore himself free, flung Merxler back, and plunged forward. The door was being opened now. He hurled his weight against it.

“Quick, Merxler! Quick! The inside pocket of Karlin’s coat!” he gasped out. “Quick!”

There was a yell of fury from the hall, as the door slammed shut, and Billy Kane turned the key—and then a crash upon it, and another, as human battering rams launched themselves madly against the panels. Over his shoulder Billy Kane saw Merxler standing hesitant, glancing in stupefaction alternately from the door to Karlin on the floor.

A panel cracked and splintered. Billy Kane’s revolver roared like a cannon shot through the room. The bullet, aimed low, ripped along the threshold.

“Merxler, the inside pocket of Karlin’s coat!” he said in deadly quiet. “Man, are you mad! Hurry! They’ll have us both in another minute!”

The revolver shot had checked the rush against the door for an instant, though only for an instant, but that instant was enough. Merxler, stung into action, had leapt to Karlin’s side, and was bending over the man. And then he was on his feet, staring wildly at the papers in his hand.

“Good God, what’s this!” he cried out. “What’s——”

“The French doors—the fence—run for it!” said Billy Kane tensely, and fired again. And the next instant the room was in darkness, as he switched off the light; and in another, with Merxler running now beside him, he had crossed the few feet of yard and was swinging himself over the fence.

From behind came the rip and tear and smash of the yielding door, shouts, yells, oaths, a confusion of noises; but Billy Kane had reached the cross street now, and, pulling the mask from his face, jerking his hat brim far over his eyes, turned in the opposite direction from that in which he had entered the lane, and, urging Merxler on, was running at top speed. At the next block they swerved again—and Billy Kane, with a restraining pressure on Merxler’s arm, here dropped into a slower and less noticeable pace. There was little or no chance of pursuit now; no one, it seemed, had taken the immediate initiative of following them into the lane, yet Billy Kane made a wide detour before he finally reached his waiting taxi cab.

“Get in,” he said to Merxler; and, crisply, to the chauffeur: “Drive as fast as you know how! Go up the street at the rear of The Purple Scarf!”