Patsy Garvan had reason to congratulate himself on the outcome of his night’s vigil, but it is to be feared that he did not follow it up in the best way. It was nearly half past four in the morning when he reached Nick’s headquarters, and he unwisely decided that there was no use of rousing Chick at that hour. Breakfast was only about three hours off, and he reasoned that the delay could make little difference.  
Whatever Follansbee had done to Stone was an accomplished fact, and it was not likely that any more serious steps would be taken that night. Besides, St. Swithin’s Hospital was not an easy place to commit a crime, even though the criminal was at the head of it. If Follansbee meant to murder Stone, and had drugged him to get him into his power, the murder would probably be a slow and subtle one. In that case a few hours were unimportant.
 
Consequently Patsy made his way quietly to his own room without rousing Chick or leaving any word for him. He removed his make-up, slipped out of his ragged suit with a sigh of relief, and was asleep almost as soon as he touched the bed. He fully expected to be up again by half past seven at the latest, and counted on being called if he showed any tendency to oversleep. He did not realize, however, that he had had very little rest for several days, and that Nature would do her best to make up the shortage as soon as she had the chance. Nor did it occur to him that Chick, knowing that he had been doing double duty, might give orders not to have him called if he did not appear for breakfast on time.
 
The result was that when he awakened, it was to discover that the sun was pouring into his room with a warmth and intensity which proved that the day was several hours old. He rose up in bed with a start and looked at the little clock on the table.
 
“Half past eleven!” he ejaculated, in amazement. “Great Scott! I wouldn’t have had this happen for the world. Why the dickens didn’t I make a report of some sort last night before turning in? I might have known that I would sleep like a log, and that Chick might see I wasn’t disturbed.”
 
Without stopping to dress, he stuck his head out of the door and shouted Chick’s name at the top of his voice. The housekeeper heard him, and came bustling down the hall.
 
“Mr. Chick was called out of town this morning,” she said, greatly to the young assistant’s chagrin.
 
“Where to?” he demanded.
 
“To Providence.”
 
“To a hotel?”
 
“I’ll bring you the note he left for Mr. Carter.”
 
She hurried into the celebrated detective’s study and presently returned with a slip of paper. On it the chief assistant had explained his errand, and said that he hoped to be back by night, but would be running about most of the day. He added that he would try to keep in touch with the Sound Hotel, and could be reached there if he was wanted.
 
The information did not sound promising, but Patsy was obliged to make the best of it. Putting on a bath robe and slippers, he ran to the chief’s study and attempted to reach Chick on the long-distance telephone. As he had anticipated, he had not yet arrived at the hotel. He left a message asking that he be called as soon as possible; but after he had done so, he decided that he could not wait for that. There were too many uncertainties, and the delay might prove serious.
 
“Confound it, this is a pretty mess,” he told himself. “I can’t be sure about Chick any more. I’ll have to ’fess up to the chief—if I can get hold of him.”
 
The housekeeper was once more summoned, and from her Patsy learned that the chief had not been there either the night before or that morning.
 
“He’s still at the Windermere, I suppose,” the housekeeper suggested.
 
“Let’s hope he is,” Patsy answered, and returned to the phone. He gave the number of the Hotel Windermere, and was promptly............