"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.

Cat-like, he advanced, but instead of striking at them, he quietly took a seat in a chair close behind them, a magazine revolver in his hand.