The new detective had gone, and a moment later Jamieson went rapidly down the drive, the cob's feet striking fire at every step. Louise stood looking after them. When she turned around she faced Gertrude, who stood indignant, almost tragic, in the hall.

"You KNOW what threatens Halsey, Louise," she said accusingly. "I believe you know this whole horrible thing, this mystery that we are struggling with. If anything happens to Halsey, I shall never forgive you."

Louise only raised her hands despairingly and dropped them again.

"He is as dear to me as he is to you," she said sadly. "I tried to warn him."

"Nonsense!" I said, as briskly as I could. "We are making a lot of trouble out of something perhaps very small. Halsey was probably late-he is always late. Any moment we may hear the car coming up the road."

But it did not come. After a half-hour of suspense, Louise went out quietly, and did not come back. I hardly knew she was gone until I heard the station hack moving off. At eleven o'clock the telephone rang. It was Mr. Jamieson.

"I have found the Dragon Fly, Miss Innes," he said. "It has collided with a freight car on the siding above the station. No, Mr. Innes was not there, but we shall probably find him. Send Warner for the car."

But they did not find him. At four o'clock the next morning we were still waiting for news, while Alex watched the house and Sam the grounds. At daylight I dropped into exhausted sleep. Halsey had not come back, and there was no word from the detective.

CHAPTER XXVI

HALSEY'S DISAPPEARANCE

Nothing that had gone before had been as bad as this. The murder and Thomas' sudden death we had been able to view in a detached sort of way. But with Halsey's disappearance everything was altered. Our little circle, intact until now, was broken. We were no longer onlookers who saw a battle pa.s.sing around them. We were the center of action. Of course, there was no time then to voice such an idea. My mind seemed able to hold only one thought: that Halsey had been foully dealt with, and that every minute lost might be fatal.

Mr. Jamieson came back about eight o'clock the next morning: he was covered with mud, and his hat was gone. Altogether, we were a sad-looking trio that gathered around a breakfast that no one could eat. Over a cup of black coffee the detective told us what he had learned of Halsey's movements the night before. Up to a certain point the car had made it easy enough to follow him. And I gathered that Mr. Burns, the other detective, had followed a similar car for miles at dawn, only to find it was a touring car on an endurance run.

"He left here about ten minutes after eight," Mr. Jamieson said. "He went alone, and at eight twenty he stopped at Doctor Walker's. I went to the doctor's about midnight, but he had been called out on a case, and had not come back at four o'clock. From the doctor's it seems Mr. Innes walked across the lawn to the cottage Mrs. Armstrong and her daughter have taken. Mrs. Armstrong had retired, and he said perhaps a dozen words to Miss Louise. She will not say what they were, but the girl evidently suspects what has occurred. That is, she suspects foul play, but she doesn't know of what nature. Then, apparently, he started directly for the station. He was going very fast-the flagman at the Carol Street crossing says he saw the car pa.s.s. He knew the siren. Along somewhere in the dark stretch between Carol Street and the depot he evidently swerved suddenly-perhaps some one in the road-and went full into the side of a freight. We found it there last night."

"He might have been thrown under the train by the force of the shock," I said tremulously.

Gertrude shuddered.

"We examined every inch of track. There was-no sign."

"But surely-he can't be-gone!" I cried. "Aren't there traces in the mud-anything?"

"There is no mud-only dust. There has been no rain. And the footpath there is of cinders. Miss Innes, I am inclined to think that he has met with bad treatment, in the light of what has gone before. I do not think he has been murdered." I shrank from the word. "Burns is back in the country, on a clue we got from the night clerk at the drug-store. There will be two more men here by noon, and the city office is on the lookout."

"The creek?" Gertrude asked.

"The creek is shallow now. If it were swollen with rain, it would be different. There is hardly any water in it. Now, Miss Innes," he said, turning to me, "I must ask you some questions. Had Mr. Halsey any possible reason for going away like this, without warning?"

"None whatever."

"He went away once before," he persisted. "And you were as sure then."

"He did not leave the Dragon Fly jammed into the side of a freight car before."

"No, but he left it for repairs in a blacksmith shop, a long distance from here. Do you know if he had any enemies? Any one who might wish him out of the way?"

"Not that I know of, unless-no, I can not think of any."

"Was he in the habit of carrying money?"

"He never carried it far. No, he never had more than enough for current expenses."

Mr. Jamieson got up then and began to pace the room. It was an unwonted concession to the occasion.

"Then I think we get at it by elimination. The chances are against flight. If he was hurt, we find no trace of him. It looks almost like an abduction. This young Doctor Walker-have you any idea why Mr. Innes should have gone there last night?"

"I can not understand it," Gertrude said thoughtfully. "I don't think he knew Doctor Walker at all, and-their relations could hardly have been cordial, under the circ.u.mstances."

Jamieson p.r.i.c.ked up his ears, and little by little he drew from us the unfortunate story of Halsey's love affair, and the fact that Louise was going to marry Doctor Walker.

Mr. Jamieson listened attentively.

"There are some interesting developments here," he said thoughtfully. "The woman who claims to be the mother of Lucien Wallace has not come back. Your nephew has apparently been spirited away. There is an organized attempt being made to enter this house; in fact, it has been entered. Witness the incident with the cook yesterday. And I have a new piece of information."

He looked carefully away from Gertrude. "Mr. John Bailey is not at his Knickerbocker apartments, and I don't know where he is. It's a hash, that's what it is. It's a Chinese puzzle. They won't fit together, unless-unless Mr. Bailey and your nephew have again-"

And once again Gertrude surprised me. "They are not together," she said hotly. "I-know where Mr. Bailey is, and my brother is not with him."

The detective turned and looked at her keenly.

"Miss Gertrude," he said, "if you and Miss Louise would only tell me everything you know and surmise about this business, I should be able to do a great many things. I believe I could find your brother, and I might be able to-well, to do some other things." But Gertrude's glance did not falter.

"Nothing that I know could help you to find Halsey," she said stubbornly. "I know absolutely as little of his disappearance as you do, and I can only say this: I do not trust Doctor Walker. I think he hated Halsey, and he would get rid of him if he could."

"Perhaps you are right. In fact, I had some such theory myself. But Doctor Walker went out late last night to a serious case in Summitville, and is still there. Burns traced him there. We have made guarded inquiry at the Greenwood Club, and through the village. There is absolutely nothing to go on but this. On the embankment above the railroad, at the point where we found the machine, is a small house. An old woman and a daughter, who is very lame, live there. They say that they distinctly heard the shock when the Dragon Fly hit the car, and they went to the bottom of their garden and looked over. The automobile was there; they could see the lights, and they thought someone had been injured. It was very dark, but they could make out two figures, standing together. The women were curious, and, leaving the fence, they went back and by a roundabout path down to the road. When they got there the car was still standing, the headlight broken and the bonnet crushed, but there was no one to be seen."

The detective went away immediately, and to Gertrude and me was left the woman's part, to watch and wait. By luncheon nothing had been found, and I was frantic. I went up-stairs to Halsey's room finally, from sheer inability to sit across from Gertrude any longer, and meet her terror-filled eyes.

Liddy was in my dressing-room, suspiciously red-eyed, and trying to put a right sleeve in a left armhole of a new waist for me. I was too much shaken to scold.

"What name did that woman in the kitchen give?" she demanded, viciously ripping out the offending sleeve.

"Bliss. Mattie Bliss," I replied.

"Bliss. M. B. Well, that's not what she has on he suitcase. It is marked N. F. C."

The new cook and her initials troubled me not at all. I put on my bonnet and sent for what the Casanova liveryman called a "stylish turnout." Having once made up my mind to a course of action, I am not one to turn back. Warner drove me; he was plainly disgusted, and he steered the livery horse as he would the Dragon Fly, feeling uneasily with his left foot for the clutch, and working his right elbow at an imaginary horn every time a dog got in the way.

Warner had something on his mind, and after we had turned into the road, he voiced it.

"Miss Innes," he said. "I overheard a part of a conversation yesterday that I didn't understand. It wasn't my business to understand it, for that matter. But I've been thinking all day that I'd better tell you. Yesterday afternoon, while you and Miss Gertrude were out driving, I had got the car in some sort of shape again after the fire, and I went to the library to call Mr. Innes to see it. I went into the living-room, where Miss Liddy said he was, and half-way across to the library I heard him talking to some one. He seemed to be walking up and down, and he was in a rage, I can tell you."

"What did he say?"