T. B. nodded.

"I'll sleep here," he said. "You'd better bed down somewhere, David, and you, Ela?"

"I'll take a little walk in the park," said the sarcastic Mr. Ela.

T. B. went back to his room, Ela following.

He switched on the light, but stood still in the doorway. In the ten minutes' absence some one had been there. Two drawers of the desk had been forced; the floor was littered with papers flung there hurriedly by the searcher.

T. B. stepped swiftly to the desk--the envelope had gone.

A window was open and the fog was swirling into the room.

"There's blood here," said Mr. Ela. He pointed to the dappled blotting pad.

"Cut his hand on the gla.s.s," said T. B. and jerked his head to the broken pane in the window. He peered out through the open cas.e.m.e.nt. A hook ladder, such as American firemen use, was hanging to the parapet.

So thick was the fog that it was impossible to see how long the ladder was, but the two men pulled it up with scarcely an effort. It was made of a stout light wood, with short steel brackets affixed at intervals.

"Blood on this too," said Ela, then, to the constable who had come to his ring, he jerked his orders rapidly: "Inspector on duty to surround the office with all the reserve--'phone Cannon Row all men available to circle Scotland Yard, and to take into custody a man with a cut hand--'phone all stations to that effect."

"There's little chance of getting our friend," said T. B. He took up a magnifying gla.s.s and examined the stains on the pad.

"Who was he?" asked Ela.

T. B. pointed to the stain.

"Montague," he said, briefly, "and he now knows the very thing I did not wish him to know."

"And that is?"

T. B. did not speak for a moment. He stood looking down at the evidence which the intruder had left behind.

"He knows how much I know," he said, grimly, "but he may also imagine I know more--there are going to be developments."

CHAPTER IV

It was a bad night in London, not wild or turbulent, but swathed to the eyes like an Eastern woman in a soft grey garment of fog. It engulfed the walled canyons of the city, through which the traffic had roared all day, plugged up the maze of dark side-streets, and blotted out the open squares. Close to the ground it was thick, viscous, impenetrable, so that one could not see a yard ahead, and walked ghostlike, adventuring into a strange world.

Occasionally it dispersed. In front of the Jollity Theatre numbers of arc-lights wrought a wavering mist-hung yellow s.p.a.ce, into which a constant line of vehicles, like monstrous shiny beetles, emerged from the outer nowhere, disgorged their contents, and were eclipsed again.

And pedestrians in gay processional streamed across the rudy glistening patch like figures on a slide.

Conspicuous in the shifting throng was a sharp-faced boy, ostensibly selling newspapers, but with a keen eye upon the arriving vehicles.

Suddenly he darted to the curb, where an electric coupe had just drawn up. A man alighted heavily, and turned to a.s.sist a young woman.

For an instant the lad's attention was deflected by the radiant vision.

The girl, wrapped in a voluminous cloak of ivory colour, was tall and slim, with soft white throat and graceful neck; her eyes under shadowy lashes were a little narrow, but blue as autumn mist, and sparkling now with amus.e.m.e.nt.

"Watch your steps, auntie," she warned laughingly, as a plump, elderly, little lady stepped stiffly from the coupe. "These London fogs are dangerous."

The boy stood staring at her, his feet as helpless as if they had taken root to the ground. Suddenly he remembered his mission. His native impudence rea.s.serted itself, and he started forward.

"Paper, sir?"

He addressed the man. For a moment it seemed as though he were to be rebuffed, then something in the boy's att.i.tude changed his mind.

As the man fumbled in an inner pocket for change, the lad took a swift inventory. The face beneath the tall hat was a powerful oval, paste-coloured, with thin lips, and heavy lines from nostril to jaw.

The eyes were close set and of a turbid grey.

"It's him," the boy a.s.sured himself, and opened his mouth to speak.

The girl laughed amusedly at the spectacle of her companion's pa.s.sion for news in this grimy atmosphere, and turned to the young man in evening dress who had just dismissed his taxi and joined the group.

It was the diversion the boy had prayed for. He took a quick step toward the older man.

"T. B. S.," he said, in a soft but distinct undertone.

The man's face blanched suddenly, and a coin which he held in his large, white-gloved palm slipped jingling to the pavement.

The young messenger stooped and caught it dexterously.

"T. B. S.," he whispered again, insistently.

"Here?" the answer came hoa.r.s.ely. The man's lips trembled.

"Watchin' this theatre--splits[1] by the million," finished the boy promptly, and with satisfaction. Under cover of returning the coin, he thrust a slip of white paper into the other's hand.

[Footnote 1: Splits: detectives.]

Then he wheeled, ducked to the girl with a gay little swagger of impudence, threw a lightning glance of scrutiny at her young escort, and turning, was lost in the throng.

The whole incident occupied less than a minute, and presently the four were seated in their box, and the gay strains from the overture of _The Strand Girl_ came floating up to them.

"I wish I were a little street gamin in London," said the girl pensively, fingering the violets at her corsage. "Think of the adventures! Don't you, Frank?"

Frank Doughton looked across at her with smiling significant eyes, which brought a flush to her cheeks.

"No," he said softly, "I do not!"

The girl laughed at him and shrugged her round white shoulders.

"For a young journalist, Frank, you are too obvious--too delightfully verdant. You should study indirection, subtlety, finesse--study our mutual friend Count Poltavo!"

She meant it mischievously, and produced the effect she desired.