Karschoff nodded.
"I gathered so from Naida," he admitted. "Prince Shan, though, is the pivot upon which the whole thing turns. You have heard nothing final from him?"
"Nothing! Tell me, was any one arrested at the Albert Hall?"
"No one. The murdered man, as I suppose you have heard, was Sen Lu, one of the Prince's secretaries."
"The whole thing seems strange," Nigel remarked. "Do you suppose Prince Shan knew that an attempt upon his life was likely to-night?"
Karschoff shook his head doubtfully.
"It is difficult to say. These Orientals contrive to surround themselves with such an atmosphere of mystery. But from what I know of Prince Shan," he went on, "I do not think that he is one to shirk danger—even from the assassin's dagger."
A milk cart drew up with a clatter outside. There was the sound of the area gate being opened. Karschoff put on his hat. He looked Nigel in the face.
"Maggie," he began—
Nigel nodded understandingly as he threw open the front door.