Elaine gazed about in trepidation. But before she could say anything, Mary, with a great show of surprise, exclaimed, "Why, I must have made a mistake. This isn't Mrs. Rivington's apartment. How stupid of me."

They looked at each other a moment. Then each laughed nervously, as together they started to go out of the door. It was locked!

Quickly they ran to another door. It was locked, also.

Then they went to the windows. Behind the curtains they were barred and looked out on a blank brick wall in a little court.

"Oh," cried Mary wringing her hands, stricken in mock panic, "oh, I'm so frightened. This may be the den of Chinese white slavers!"

She had picked up some Chinese articles on a table, including the box that Long had left there. It had a peculiar odor.

"Opium!" she whispered, showing it to Elaine.

The two looked at each other, Elaine genuinely worried now.

Just then, the Chinaman entered and stood a moment gazing at them. They turned and Elaine recoiled from him. Long bowed.

"Oh sir," cried Mary, "We've made a mistake. Can't you tell us how to get out?"

Long's only answer was to spread out his hands in polite deprecation and shrug his suave shoulders.

"No speke Englis," he said, gliding out again from the room and closing the door.

Elaine and Mary looked about in despair.

"What shall we do?" asked Elaine.

Mary said nothing, but with a hasty glance discovered on the wall the knife which Long had already told her about. She took it from its scabbard. As she did so the Chinaman returned with a tray on which were queer drinks and gla.s.ses.

At the sight of Mary with the knife he scowled blackly, laid the tray down, and took a few steps in her direction. She brandished the knife threateningly, then, as if her nerve failed her, fainted letting the knife fall carefully on the floor so that it struck on the handle and not on the blade.

Long quickly caught her as she fainted and carried her out of the room, banging shut the door. Elaine followed in a moment, loyally, to protect her supposed friend, but found that the door had a snap lock on the other side.

She looked about wildly and in a moment Long reappeared. As he advanced slowly and insinuatingly, she drew back, pleading. But her words fell on seemingly deaf ears.

She had picked up the knife which Mary had dropped and when at last Long maneuvred to get her cornered and was about to seize her, she nerved herself up and stabbed him resolutely.

Long staggered back--and fell.

As he did so, he pressed the bladder which he had already placed under his coat. A dark red fluid, like blood, oozed out all over him and ran in a pool on the floor.

Elaine, too horror-stricken at what had happened even to scream, dropped the knife and bent over him. He did not move. She staggered back and ran through the now open door. As she did so, Long seemed suddenly to come to life. He raised himself and looked after her, then with a subtle smile sank back into his former a.s.sumed posture on the floor.

When Elaine reached the other room, she found Mary there with the Chinese servant who was giving her a gla.s.s of water. At the sight of her, the servant paused, then withdrew into another room further back.

Mary, now apparently recovering from her faintness, smiled wanly at Elaine.

"It's all right," she murmured. "He is a Chinese prince who thought we were callers."

At the rea.s.suring nod of Mary toward the front room, Elaine was overcome.

"I--I killed him!" she managed to gasp.

"What?" cried Mary, starting up and trembling violently. "You killed him?"

"Yes," sobbed Elaine, "he came at me--I had the knife--I struck at him--"

The two girls ran into the other room. There Mary looked at the motionless body on the floor and recoiled, horrified.

Elaine noticing some spots on her hands and seeing that they were stained by the blood of Long Sin, wiped the spots off on her hankerchief, dropping it on the floor.

"Ugh!" exclaimed a guttural voice behind them.

It was the servant who had come in. Even his ordinarily impa.s.sive Oriental face could not conceal the horror and fear at the sight of his master lying on the floor in a pool of gore. Elaine was now more frightened than ever, if that were possible.

"You--kill him--with knife?" insinuated the Chinese.

Elaine was dumb. The servant did not wait for an answer, but hastily opened the hall door.

To Elaine it seemed that something must be done quickly. A moment and all the house would be in uproar.

Instead, he placed his finger on his lips. "Quick--no word," he said, leading the way to the hall door, "and--you must not leave that--it will be a clue," he added, picking up the b.l.o.o.d.y handkerchief and pressing it into Elaine's hand.

They quickly ran out into the hall.

"Go--quick!" he urged again, "and hide the handkerchief in the bag. Let no one see it!"

He shut the door. As they hurried away, Elaine breathed a sigh of relief.

"Why did he let us go, though?" she whispered, her head in a whirl.

"I don't know," panted Mary, "but anyhow, thank heaven, we are out of it. Come," she added, taking Elaine's arm, "not a soul has seen us except the servant. Let us get away as quietly as we can."

They had reached the street. Afraid to run, they hurried as fast as they could until they turned the first corner.

Elaine looked back. No one was pursuing.

"We must separate," added Mary. "Let us go different ways. I will see you later. Perhaps they will think some enemy has murdered him."

They pressed each other's hands and parted.

Meanwhile in the front room, Long Sin was on his feet again brushing himself off and mopping up the blood.

"It worked very well, Sam," he said to the servant.

They were conversing eagerly and laughing and did not hear a noise in the back room.

A sinister figure had made its way by means of a fire-escape to a rear window that was not barred, and silently he had stolen in on them.