Hardaway touched his arm soothingly.

“Don’t worry, Mr. Quest,” he said. “We don’t want the woman alone; we want the man, too. Now the man was away. He only visits the house occasionally, and I am given to understand that he is a member of several West End clubs. When the two women entered that house yesterday afternoon, there wasn’t a soul in it except servants. The woman telephoned for the man. He never turned up last night nor this morning. He arrived at that house twenty minutes ago.”

Quest drew a little breath.

“It gave me a turn,” he admitted. “Say, this is a slow taxi!”

The Inspector glanced out of the window.

“If this is the young lady you’re looking for,” he said, “you’ll be in plenty of time, never fear. What I am hoping is that we may be able to catch my fellows before they try to rush the place. You understand, with your experience, Mr. Quest, that there are two things we’ve got to think of. We not only want to put our hand upon the guilty persons, but we want to bring the crime home to them.”

“I see that,” Quest assented. “How much farther is this place?”

“We’re there,” Hardaway told him.

He stopped the cab and they got out. A man who seemed to be strolling aimlessly along, reading a newspaper, suddenly joined them.

“Well, Dixon?” his chief exclaimed.