But Jess held him back.

“Don’t, Roy,” she whispered. “He will kill you.”

And at that instant a man’s form passed the doorway.

It was Mr. Keeler. He had on his trousers, shirt and shoes, but nothing else. His hair was all rumpled and one hand was stretched out in front of him as though he had been feeling his way.

He halted for an instant at the foot of the stairs and turned his face toward the library. Then Roy saw that his eyes were closed.

“He’s walking in his sleep,” he whispered to Jess. “I must go and wake him or he may do himself some damage.”

“Let him alone. He may go out and then we can lock the door against him.”

“Jess, would you be as cruel as that?”

“Perhaps he isn’t asleep. He may be only shamming.”

“I’m going to find out at any rate. There, he’s fumbling with the lock. You’d better take the opportunity to go up stairs.”