The detective gave in. "Very well," he said.

Mrs. Pickett rose. "If you will come and dine at my house to-night I think I can prove to you that it will be needed. Will you come?"

"I'll come," promised Mr. Snyder.

VII

When Mr. Snyder arrived at the Excelsior and shortly after he was shown into the little private sitting room where he found Oakes, the third guest of the evening unexpectedly arrived.

Mr. Snyder looked curiously at the newcomer. Captain Muller had a peculiar fascination for him. It was not Mr. Snyder's habit to trust overmuch to appearances. But he could not help admitting that there was something about this man's aspect which brought Mrs. Pickett's charges out of the realm of the fantastic into that of the possible. There was something odd--an unnatural aspect of gloom--about the man. He bore himself like one carrying a heavy burden. His eyes were dull, his face haggard. The next moment the detective was reproaching himself with allowing his imagination to run away with his calmer judgment.

The door opened, and Mrs. Pickett came in. She made no apology for her lateness.

To Mr. Snyder one of the most remarkable points about the dinner was the peculiar metamorphosis of Mrs. Pickett from the brooding silent woman he had known to the gracious and considerate hostess.

Oakes appeared also to be overcome with surprise, so much so that he was unable to keep his astonishment to himself. He had come prepared to endure a dull evening absorbed in grim silence, and he found himself instead opposite a bottle of champagne of a brand and year which commanded his utmost respect. What was even more incredible, his hostess had transformed herself into a pleasant old lady whose only aim seemed to be to make him feel at home.

Beside each of the guests' plates was a neat paper parcel. Oakes picked his up, and stared at it in wonderment. "Why, this is more than a party souvenir, Mrs. Pickett," he said. "It's the kind of mechanical marvel I've always wanted to have on my desk."

"I'm glad you like it, Mr. Oakes," Mrs. Pickett said, smiling. "You must not think of me simply as a tired old woman whom age has completely defeated. I am an ambitious hostess. When I give these little parties, I like to make them a success. I want each of you to remember this dinner."

"I'm sure I will."

Mrs. Pickett smiled again. "I think you all will. You, Mr. Snyder." She paused. "And you, Captain Muller."

To Mr. Snyder there was so much meaning in her voice as she said this that he was amazed that it conveyed no warning to Muller. Captain Muller, however, was already drinking heavily. He looked up when addressed and uttered a sound which might have been taken for an expression of polite acquiescence. Then he filled his gla.s.s again.

Mr. Snyder's parcel revealed a watch-charm fashioned in the shape of a tiny, candid-eye camera. "That," said Mrs. Pickett, "is a compliment to your profession." She leaned toward the captain. "Mr. Snyder is a detective, Captain Muller."

He looked up. It seemed to Mr. Snyder that a look of fear lit up his heavy eyes for an instant. It came and went, if indeed it came at all, so swiftly that he could not be certain.

"So?" said Captain Muller. He spoke quite evenly, with just the amount of interest which such an announcement would naturally produce.

"Now for yours, Captain," said Oakes. "I guess it's something special.

It's twice the size of mine, anyway."

It may have been something in the old woman's expression as she watched Captain Muller slowly tearing the paper that sent a thrill of excitement through Mr. Snyder. Something seemed to warn him of the approach of a psychological moment. He bent forward eagerly.

There was a strangled gasp, a thump, and onto the table from the captain's hands there fell a little harmonica. There was no mistaking the look on Muller's face now. His cheeks were like wax, and his eyes, so dull till then, blazed with a panic and horror which he could not repress. The gla.s.ses on the table rocked as he clutched at the cloth.

Mrs. Pickett spoke. "Why, Captain Muller, has it upset you? I thought that, as his best friend, the man who shared his room, you would value a memento of Captain Gunner. How fond you must have been of him for the sight of his harmonica to be such a shock."

The captain did not speak. He was staring fascinated at the thing on the table. Mrs. Pickett turned to Mr. Snyder. Her eyes, as they met his, held him entranced.

"Mr. Snyder, as a detective, you will be interested in a curious and very tragic affair which happened in this house a few days ago. One of my boarders, Captain Gunner, was found dead in his room. It was the room which he shared with Captain Muller. I am very proud of the reputation of my house, Mr. Snyder, and it was a blow to me that this should have happened. I applied to an agency for a detective, and they sent me a stupid boy, with nothing to recommend him except his belief in himself. He said that Captain Gunner had died by accident, killed by a snake which had come out of a crate of bananas. I knew better. I knew that Captain Gunner had been murdered. Are you listening, Captain Muller? This will interest you, as you were such a friend of his."

The captain did not answer. He was staring straight before him, as if he saw something invisible in eyes forever closed in death.

"Yesterday we found the body of a dog. It had been killed, as Captain Gunner had been, by the poison of a snake. The boy from the agency said that this was conclusive. He said that the snake had escaped from the room after killing Captain Gunner and had in turn killed the dog. I knew that to be impossible, for, if there had been a snake in that room it could not have made its escape."

Her eyes flashed, and became remorselessly accusing. "It was not a snake that killed Captain Gunner. It was a cat. Captain Gunner had a friend who hated him. One day, in opening a crate of bananas, this friend found a snake. He killed it, and extracted the poison. He knew Captain Gunner's habits. He knew that he played a harmonica. This man also had a cat. He knew that cats hated the sound of a harmonica. He had often seen this particular cat fly at Captain Gunner and scratch him when he played. He took the cat and covered its claws with the poison. And then he left it in the room with Captain Gunner. He knew what would happen."

Oakes and Mr. Snyder were on their feet. Captain Muller had not moved.

He sat there, his fingers gripping the cloth. Mrs. Pickett rose and went to a closet. She unlocked the door. "Kitty!" she called. "Kitty!

Kitty!"

A black cat ran swiftly out into the room. With a clatter and a crash of crockery and a ringing of gla.s.s the table heaved, rocked and overturned as Muller staggered to his feet. He threw up his hands as if to ward something off. A choking cry came from his lips. "Gott! Gott!"

Mrs. Pickett's voice rang through the room, cold and biting: "Captain Muller, you murdered Captain Gunner!"

The captain shuddered. Then mechanically he replied: "Gott! Yes, I killed him."

"You heard, Mr. Snyder," said Mrs. Pickett. "He has confessed before witnesses. Take him away."

Muller allowed himself to be moved toward the door. His arm in Mr.

Snyder's grip felt limp. Mrs. Pickett stopped and took something from the debris on the floor. She rose, holding the harmonica.

"You are forgetting your souvenir, Captain Muller," she said.

MISUNDERSTOOD

The profession of Mr. James ("Spider") Buffin was pocket-picking. His hobby was revenge. James had no objection to letting the sun go down on his wrath. Indeed, it was after dark that he corrected his numerous enemies most satisfactorily. It was on a dark night, while he was settling a small score against one Kelly, a mere acquaintance, that he first fell foul of Constable Keating, whose beat took him through the regions which James most frequented.

James, having "laid for" Mr. Kelly, met him in a murky side-street down Clerkenwell way, and attended to his needs with a sand-bag.

It was here that Constable Keating first came prominently into his life. Just as James, with the satisfying feeling that his duty had been done, was preparing to depart, Officer Keating, who had been a distant spectator of the affair, charged up and seized him.

It was intolerable that he should interfere in a purely private falling-out between one gentleman and another, but there was nothing to be done. The policeman weighed close upon fourteen stone, and could have eaten Mr. Buffin. The latter, inwardly seething, went quietly, and in due season was stowed away at the Government's expense for the s.p.a.ce of sixty days.

Physically, there is no doubt that his detention did him good. The regular hours and the subst.i.tution of bread and water for his wonted diet improved his health thirty per cent. It was mentally that he suffered. His was one of those just-as-good cheap-subst.i.tute minds, incapable of harbouring more than one idea at a time, and during those sixty days of quiet seclusion it was filled with an ever-growing resentment against Officer Keating. Every day, as he moved about his appointed tasks, he brooded on his wrongs. Every night was to him but the end of another day that kept him from settling down to the serious business of Revenge. To be haled to prison for correcting a private enemy with a sand-bag--that was what stung. In the privacy of his cell he dwelt unceasingly on the necessity for revenge. The thing began to take on to him the aspect almost of a Holy Mission, a sort of Crusade.

The days slipped by, bringing winter to Clerkenwell, and with it Mr.

Buffin. He returned to his old haunts one Friday night, thin but in excellent condition. One of the first acquaintances he met was Officer Keating. The policeman, who had a good memory for faces, recognised him, and stopped.

"So you're out, young feller?" he said genially. When not in the active discharge of his professional duties the policeman was a kindly man. He bore Mr. Buffin no grudge.

"Um," said Mr. Buffin.

"Feeling fine, eh?"

"Um."