“I've got to hurry along now, Captain. Just let him know that his Chief is captured and the sooner he turns State's evidence the better it will be for him. The District Attorney might make it lighter, if he helps. I'll be back this evening if I can.” And Shirley hurried away, leaving much surprise and bewilderment in every mind.

Cronin was equal to the task of picking up the threads, and under his sarcasm, and Cleary's rough arguments, the prisoner admitted some interesting matters about the mysterious employer whose face he had never seen. But Shirley's task was far from completed.

[ [!-- H2 anchor --] ]

CHAPTER XX. A DOUBLE ON THE TRAIL

Shirley walked up to the Hotel California, at the door of which he met Warren and Taylor just leaving. They looked somewhat embarrassed but his manner was cordiality itself.

“Sorry you are going. I was just stepping up to see Miss Marigold. Won't you come back?”

His invitation was refused. Then Shirley urged Warren to be his guest at the club for dinner that evening. This was accepted with a surprising alacrity. So, he left them, and was soon talking with Helene.

“You missed a curious little sociable party,” she assured him. “They tried to quiz me, and I confess that I worked for the same purpose—no results on either side. But, Warren had an unusual telephone call, which disturbed him so much that he hurried away, sooner than he had planned.”

Shirley recounted his explorations of the afternoon, with the explanation of Reginald's disturbance. It was certain now that the leader of the assassins had something to cause uneasiness,—enough to take his mind off the campaign of murder and blackmail.

“But he will try to get you out of the way,” was her anxious answer. “You are multiplying needless dangers. Why don't you have him arrested now—the phonograph records will identify his voice, will they not? The diary will show his career, and everything seems complete in the case.”