So Allen wrote a letter to his father, asking if he could bring down Parkins for a few days. The reply, strange to say, came from Mrs. Hill, and the reading of it afforded Allen some thought.

"There is no need to ask your father anything," she wrote, "he has given everything into my hands, even to the money. What the reason is I can't say, as he refuses to speak. He seems very much afraid, and remains in his own rooms--the Japanese apartments. Mr. Mask also refused to speak, saying my husband would tell me himself if he felt inclined, but I can learn nothing. I am glad you are coming back, Allen, as I am seriously anxious. Of course you can bring Mr. Parkins. The house is large and he will not need to go near your father, though, it may be, the sight of a new face would do your father good. At all events come down and let us talk over things."

So Allen and Horace went to Westhaven and drove over to Wargrove. On the way Allen stopped the brougham, which was driven by Harry Jacobs, and took Horace to the Red Deeps to see the spot where the murder had been committed. When they got back--as the day was wet--their boots were covered with the red mud of the place. Jacobs saw this, and begged to speak to Allen before he got in.

"I say, Mr. Allen," he whispered, so that Parkins, now in the brougham, should not hear, "do you remember when I drove you to Misery Castle I said I'd tell you something?"

"Yes. What is it?"

"Well, you know I clean the boots, sir? Well, master's boots were covered with that red mud, on the day after----"

"I know all about that," interrupted Allen, feeling his blood run cold as he thought what trouble might come through the boy's chatter; "my father explained. You need not mention it."

"No, sir," said Jacobs obediently enough. He was devoted to Allen, for a queer reason that Allen had once thrashed him for being impertinent. There was no danger that he would say anything, but on the way to Wargrove the groom wondered if his master had anything to do with the commission of the crime. Only in the direction of the Red Deeps could such mud be found, and Jacobs had no doubt but that Mr. Hill senior had been to the place.

When they arrived at "The Arabian Nights" Mr. Hill at first refused to see Allen, but consented to do so later. When the young man entered the Japanese rooms, he was alarmed to see how ill his father looked. The man was wasting to skin and bone, his face was as white as death, and he started nervously at every noise.

"You must see Dr. Grace," said Allen.