On Monday I went out for the first time. I did not go to the office. I wanted to walk. I thought fresh air and exercise would drive away the blue devils that had me by the throat. McKnight insisted on a long day in his car, but I refused.

“I don't know why not,” he said sulkily. “I can't walk. I haven't walked two consecutive blocks in three years. Automobiles have made legs mere ornaments—and some not even that. We could have Johnson out there chasing us over the country at five dollars an hour!”

“He can chase us just as well at five miles an hour,” I said. “But what gets me, McKnight, is why I am under surveillance at all. How do the police know I was accused of that thing?”

“The young lady who sent the flowers—she isn't likely to talk, is she?”

“No. That is, I didn't say it was a lady.” I groaned as I tried to get my splinted arm into a coat. “Anyhow, she didn't tell,” I finished with conviction, and McKnight laughed.

It had rained in the early morning, and Mrs. Klopton predicted more showers. In fact, so firm was her belief and so determined her eye that I took the umbrella she proffered me.

“Never mind,” I said. “We can leave it next door; I have a story to tell you, Richey, and it requires proper setting.”

McKnight was puzzled, but he followed me obediently round to the kitchen entrance of the empty house. It was unlocked, as I had expected. While we climbed to the upper floor I retailed the events of the previous night.

“It's the finest thing I ever heard of,” McKnight said, staring up at the ladder and the trap. “What a vaudeville skit it would make! Only you ought not to have put your foot on her hand. They don't do it in the best circles.”

I wheeled on him impatiently.

“You don't understand the situation at all, Richey!” I exclaimed. “What would you say if I tell you it was the hand of a lady? It was covered with rings.”

“A lady!” he repeated. “Why, I'd say it was a darned compromising situation, and that the less you say of it the better. Look here, Lawrence, I think you dreamed it. You've been in the house too much. I take it all back: you do need exercise.”

“She escaped through this door, I suppose,” I said as patiently as I could. “Evidently down the back staircase. We might as well go down that way.”

“According to the best precedents in these affairs, we should find a glove about here,” he said as we started down. But he was more impressed than he cared to own. He examined the dusty steps carefully, and once, when a bit of loose plaster fell just behind him, he started like a nervous woman.

“What I don't understand is why you let her go,” he said, stopping once, puzzled. “You're not usually quixotic.”

“When we get out into the country, Richey,” I replied gravely, “I am going to tell you another story, and if you don't tell me I'm a fool and a craven, on the strength of it, you are no friend of mine.”

We stumbled through the twilight of the staircase into the blackness of the shuttered kitchen. The house had the moldy smell of closed buildings: even on that warm September morning it was damp and chilly. As we stepped into the sunshine McKnight gave a shiver.

“Now that we are out,” he said, “I don't mind telling you that I have been there before. Do you remember the night you left, and, the face at the window?”

“When you speak of it—yes.”

“Well, I was curious about that thing,” he went on, as we started up the street, “and I went back. The street door was unlocked, and I examined every room. I was Mrs. Klopton's ghost that carried a light, and clumb.”

“Did you find anything?”

“Only a clean place rubbed on the window opposite your dressing-room. Splendid view of an untidy interior. If that house is ever occupied, you'd better put stained glass in that window of yours.”

As we turned the corner I glanced back. Half a block behind us Johnson was moving our way slowly. When he saw me he stopped and proceeded with great deliberation to light a cigar. By hurrying, however, he caught the car that we took, and stood unobtrusively on the rear platform. He looked fagged, and absent-mindedly paid our fares, to McKnight's delight.

“We will give him a run for his money,” he declared, as the car moved countryward. “Conductor, let us off at the muddiest lane you can find.”

At one o'clock, after a six-mile ramble, we entered a small country hotel. We had seen nothing of Johnson for a half hour. At that time he was a quarter of a mile behind us, and losing rapidly. Before we had finished our luncheon he staggered into the inn. One of his boots was under his arm, and his whole appearance was deplorable. He was coated with mud, streaked with perspiration, and he limped as he walked. He chose a table not far from us and ordered Scotch. Beyond touching his hat he paid no attention to us.

“I'm just getting my second wind,” McKnight declared. “How do you feel, Mr. Johnson? Six or eight miles more and we'll all enjoy our dinners.” Johnson put down the glass he had raised to his lips without replying.

The fact was, however, that I was like Johnson. I was soft from my week's inaction, and I was pretty well done up. McKnight, who was a well spring of vitality and high spirits, ordered a strange concoction, made of nearly everything in the bar, and sent it over to the detective, but Johnson refused it.

“I hate that kind of person,” McKnight said pettishly. “Kind of a fellow that thinks you're going to poison his dog if you offer him a bone.”

When we got back to the car line, with Johnson a draggled and drooping tail to the kite, I was in better spirits. I had told McKnight the story of the three hours just after the wreck; I had not named the girl, of course; she had my promise of secrecy. But I told him everything else. It was a relief to have a fresh mind on it: I had puzzled so much over the incident at the farm-house, and the necklace in the gold bag, that I had lost perspective.

He had been interested, but inclined to be amused, until I came to the broken chain. Then he had whistled softly.

“But there are tons of fine gold chains made every year,” he said. “Why in the world do you think that the—er—smeary piece came from that necklace?”

I had looked around. Johnson was far behind, scraping the mud off his feet with a piece of stick.

“I have the short end of the chain in the sealskin bag,” I reminded him. “When I couldn't sleep this morning I thought I would settle it, one way or the other. It was hell to go along the way I had been doing. And—there's no doubt about it, Rich. It's the same chain.”

We walked along in silence until we caught the car back to town.

“Well,” he said finally, “you know the girl, of course, and I don't. But if you like her—and I think myself you're rather hard hit, old man—I wouldn't give a whoop about the chain in the gold purse. It's just one of the little coincidences that hang people now and then. And as for last night—if she's the kind of a girl you say she is, and you think she had anything to do with that, you—you're addled, that's all. You can depend on it, the lady of the empty house last week is the lady of last night. And yet your train acquaintance was in Altoona at that time.”

Just before we got off the car, I reverted to the subject again. It was never far back in my mind.

“About the—young lady of the train, Rich,” I said, with what I suppose was elaborate carelessness, “I don't want you to get a wrong impression. I am rather unlikely to see her again, but even if I do, I—I believe she is already 'bespoke,' or next thing to it.”

He made no reply, but as I opened the door with my latch-key he stood looking up at me from the pavement with his quizzical smile.

“Love is like the measles,” he orated. “The older you get it, the worse the attack.”

Johnson did not appear again that day. A small man in a raincoat took his place. The next morning I made my initial trip to the office, the raincoat still on hand. I had a short conference with Miller, the district attorney, at eleven. Bronson was under surveillance, he said, and any attempt to sell the notes to him would probably result in their recovery. In the meantime, as I knew, the Commonwealth had continued the case, in hope of such contingency.

At noon I left the office and took a veterinarian to see Candida, the injured pony. By one o'clock my first day's duties were performed, and a long Sahara of hot afternoon stretched ahead. McKnight, always glad to escape from the grind, suggested a vaudeville, and in sheer ennui I consented. I could neither ride, drive nor golf, and my own company bored me to distraction.

“Coolest place in town these days,” he declared. “Electric fans, breezy songs, airy costumes. And there's Johnson just behind—the coldest proposition in Washington.”

He gravely bought three tickets and presented the detective with one. Then we went in. Having lived a normal, busy life, the theater in the afternoon is to me about on a par with ice-cream for breakfast. Up on the stage a very stout woman in short pink skirts, with a smile that McKnight declared looked like a slash in a roll of butter, was singing nasally, with a laborious kick at the end of each verse. Johnson, two rows ahead, went to sleep. McKnight prodded me with his elbow.

“Look at the first box to the right,” he said, in a stage whisper. “I want you to come over at the end of this act.”

It was the first time I had seen her since I put her in the cab at Baltimore. Outwardly I presume I was calm, for no one turned to stare at me, but every atom of me cried out at the sight of her. She was leaning, bent forward, lips slightly parted, gazing raptly at the Japanese conjurer who had replaced what McKnight disrespectfully called the Columns of Hercules. Compared with the draggled lady of the farm-house, she was radiant.

For that first moment there was nothing but joy at the sight of her. McKnight's touch on my arm brought me back to reality.

“Come over and meet them,” he said. “That's the cousin Miss West is visiting, Mrs. Dallas.”

But I would not go. After he went I sat there alone, painfully conscious that I was being pointed out and stared at from the box. The abominable Japanese gave way to yet more atrocious performing dogs.

“How many offers of marriage will the young lady in the box have?” The dog stopped sagely at 'none,' and then pulled out a card that said eight. Wild shouts of glee by the audience. “The fools,” I muttered.

After a little I glanced over. Mrs. Dallas was talking to McKnight, but She was looking straight at me. She was flushed, but more calm than I, and she did not bow. I fumbled for my hat, but the next moment I saw that they were going, and I sat still. When McKnight came back he was triumphant.

“I've made an engagement for you,” he said. “Mrs. Dallas asked me to bring you to dinner to-night, and I said I knew you would fall all over yourself to go. You are requested to bring along the broken arm, and any other souvenirs of the wreck that you may possess.”

“I'll do nothing of the sort,” I declared, struggling against my inclination. “I can't even tie my necktie, and I have to have my food cut for me.”

“Oh, that's all right,” he said easily. “I'll send Stogie over to fix you up, and Mrs. Dal knows all about the arm. I told her.”

(Stogie is his Japanese factotum, so called because he is lean, a yellowish brown in color, and because he claims to have been shipped into this country in a box.)

The Cinematograph was finishing the program. The house was dark and the music had stopped, as it does in the circus just before somebody risks his neck at so much a neck in the Dip of Death, or the hundred-foot dive. Then, with a sort of shock, I saw on the white curtain the announcement:

IS THE DOOMED WASHINGTON FLIER, TAKEN A SHORT DISTANCE FROM THE SCENE OF THE WRECK ON THE FATAL MORNING OF SEPTEMBER TENTH. TWO MILES FARTHER ON IT MET WITH ALMOST COMPLETE ANNIHILATION.

I confess to a return of some of the sickening sensations of the wreck; people around me were leaning forward with tense faces. Then the letters were gone, and I saw a long level stretch of track, even the broken stone between the ties standing out distinctly. Far off under a cloud of smoke a small object was rushing toward us and growing larger as it came.

Now it was on us, a mammoth in size, with huge drivers and a colossal tender. The engine leaped aside, as if just in time to save us from destruction, with a glimpse of a stooping fireman and a grimy engineer. The long train of sleepers followed. From a forward vestibule a porter in a white coat waved his hand. The rest of the cars seemed still wrapped in slumber. With mixed sensations I saw my own car, Ontario, fly past, and then I rose to my feet and gripped McKnight's shoulder.

On the lowest step at the last car, one foot hanging free, was a man. His black derby hat was pulled well down to keep it from blowing away, and his coat was flying open in the wind. He was swung well out from the car, his free hand gripping a small valise, every muscle tense for a jump.

“Good God, that's my man!” I said hoarsely, as the audience broke into applause. McKnight half rose: in his seat ahead Johnson stifled a yawn and turned to eye me.

I dropped into my chair limply, and tried to control my excitement. “The man on the last platform of the train,” I said. “He was just about to leap; I'll swear that was my bag.”

“Could you see his face?” McKnight asked in an undertone. “Would you know him again?”

“No. His hat was pulled down and his head was bent I'm going back to find out where that picture was taken. They say two miles, but it may have been forty.”

The audience, busy with its wraps, had not noticed. Mrs. Dallas and Alison West had gone. In front of us Johnson had dropped his hat and was stooping for it.

“This way,” I motioned to McKnight, and we wheeled into the narrow passage beside us, back of the boxes. At the end there was a door leading into the wings, and as we went boldly through I turned the key.

The final set was being struck, and no one paid any attention to us. Luckily they were similarly indifferent to a banging at the door I had locked, a banging which, I judged, signified Johnson.

“I guess we've broken up his interference,” McKnight chuckled.

Stage hands were hurrying in every direction; pieces of the side wall of the last drawing-room menaced us; a switchboard behind us was singing like a tea-kettle. Everywhere we stepped we were in somebody's way. At last we were across, confronting a man in his shirt sleeves, who by dots and dashes of profanity seemed to be directing the chaos.

“Well?” he said, wheeling on us. “What can I do for you?”

“I would like to ask,” I replied, “if you have any idea just where the last cinematograph picture was taken.”

“Broken board—picnickers—lake?”

“No. The Washington Flier.”

He glanced at my bandaged arm.

“The announcement says two miles,” McKnight put in, “but we should like to know whether it is railroad miles, automobile miles, or policeman miles.”

“I am sorry I can't tell you,” he replied, more civilly. “We get those pictures by contract. We don't take them ourselves.”

“Where are the company's offices?”

“New York.” He stepped forward and grasped a super by the shoulder. “What in blazes are you doing with that gold chair in a kitchen set? Take that piece of pink plush there and throw it over a soap box, if you haven't got a kitchen chair.”

I had not realized the extent of the shock, but now I dropped into a chair and wiped my forehead. The unexpected glimpse of Alison West, followed almost immediately by the revelation of the picture, had left me limp and unnerved. McKnight was looking at his watch.

“He says the moving picture people have an office down-town. We can make it if we go now.”

So he called a cab, and we started at a gallop. There was no sign of the detective. “Upon my word,” Richey said, “I feel lonely without him.”

The people at the down-town office of the cinematograph company were very obliging. The picture had been taken, they said, at M-, just two miles beyond the scene of the wreck. It was not much, but it was something to work on. I decided not to go home, but to send McKnight's Jap for my clothes, and to dress at the Incubator. I was determined, if possible, to make my next day's investigations without Johnson. In the meantime, even if it was for the last time, I would see Her that night. I gave Stogie a note for Mrs. Klopton, and with my dinner clothes there came back the gold bag, wrapped in tissue paper.