He opened the door to the corridor, taking care to hold his handkerchief over his fingertips as he did so. He started to polish the outer knob of the door, then thought better of it. He stepped into the corridor and pushed the door shut with his right hand, making no effort to keep his fingers from touching the outside knob.

He was just closing the door when he heard the clang of the elevator door and a woman's voice saying, "… you can hear her just as soon as you get opposite the door. She's crying and laughing and saying something about lucky legs."

There were pounding steps in the corridor, and a man's gruff voice said, "Probably just a woman having hysterics over a love affair."

"But I heard something fall, Officer. It sounded like a body. It was a jarring thud…"

Perry Mason looked toward the far end of the corridor. It was a blind corridor with no window. He looked back toward the bend in the corridor, whipped some passkeys from his pocket, selected one and inserted it in the lock of the door. The key worked smoothly. The bolt clicked into place, and Perry Mason was slipping the key back into his pocket as an officer in uniform barged around the bend in the corridor and came to an abrupt stop as he saw Perry Mason in front of the door of apartment 302.

Perry Mason raised his knuckles and pounded upon the panel, keeping his face toward the door.

From the corner of his eye, he saw the officer hold out his left hand and restrain a rather fleshy woman of middle age who had rounded the corner in the corridor just back of the officer.

Perry Mason banged on the panels of the door; then pressed his thumb against the button on the buzzer.

After a moment, he turned away with an air of dejection, raised his eyes and then, apparently for the first time, saw the officer and the woman.

He stared at them.

"Just a minute, buddy," said the officer, moving forward. "I want to talk with you."

Perry Mason stood still.

The officer turned to the woman.

"That the apartment?" he asked.

The woman nodded.

Perry Mason turned to face the woman. She wore a rather wrinkled dress, shoes, and no stockings. Her hair was badly disarranged. There was no makeup on her face.

"Who were you looking for, buddy?" asked the officer.

Perry Mason jerked his head toward the door of apartment 302.

"I wanted to see the man who lives in there," he said.

"Who's the man who lives there?" asked the officer.

"His name is Frank Patton," Perry Mason said, " — that is, I have reason to believe that's his name."

"What did you want to see him about?"

"About a matter of business."

The officer turned to the woman.

"Do you know this man?" he asked.

"No," she said, "I've never seen him before."

Perry Mason frowned irritably.

"You don't need to wonder about who I am," he said.

He pulled a leather card case from his pocket, took out one of his business cards, and handed it to the officer.

The officer read it, and there was a note of respect in his voice as he looked up and said, "Oh, you're Perry Mason, the big lawyer, eh? I've seen you in court. I remember you now."

Mason nodded, smiled affably.

"How long you been trying to get in the apartment?" asked the officer.

"Oh, perhaps a minute, perhaps a little longer," Mason said.

"There's no one home?" the officer inquired.

"I couldn't hear a sound," Mason said, "and it's strange, because I had every reason to believe that Patton was in. I pushed the button on the buzzer, and I could hear the buzzer sounding in the apartment. Then I pounded on the door, but I didn't get any answer. I thought perhaps he was in another room, or changing his clothes or something, so I waited a little while and then started all over again. I was just giving up in disgust when you came around the bend in the corridor."

"This woman," said the officer, "heard a girl having hysterics in there and then she heard something bang, as though some one had fallen to the floor. You didn't hear anything, did you?"

"Not me," Mason said. "How long ago was it?" he asked the woman.

"Not very long ago," she said. "I was in bed. I hadn't been feeling well and I went to bed early. I jumped up and pulled on a dress and put on some shoes and went out to find the officer. I brought him up here just as soon as I found him."

"Did you try the door?" the officer inquired.

"I rattled the knob," Perry Mason said. "I think the door's locked. But I didn't really turn the knob and press against it to find out. I just rattled it. I don't mind telling you, Officer, that I'm very much interested. I'm anxious to see Frank Patton. If he's in there, I'd like very much to see him."

The officer regarded the woman with frowning contemplation; then moved over to the door of apartment 302 and banged with his knuckles on the panel. When there was no answer, he took out his night stick and rapped sharply with the end of that. Then, he tried the knob of the door.

"Locked," he said.

He turned away from the door and said to the woman, "You've got the apartment across the hall?"

She nodded.

"Let's go in there," he said. "I want to locate the manager and see if he's got a passkey, and will let us in."

Perry Mason looked impatiently at his wristwatch, then faced the woman.

"Would you say that it was as much as ten minutes ago that you heard the noise in there?" he asked.

"Just about, I guess," she said.

"Just what did you hear?"

"I heard a girl sobbing. She kept saying something about lucky legs, or about her legs being lucky."

"Was she talking in a loud tone?" Mason asked.

"Yes, you know the way a woman does when she's having hysterics. She was sobbing and crying out words."

"You couldn't hear all the words?"

"No."

"Then what did you hear next?"

"Then I heard something bang to the floor."

"You didn't hear any one go in the apartment?"

"No."

"Didn't hear any one go out?"

"No. I don't know as I would have heard that. You see, the way the apartment is arranged, I can hear sounds that come through the bathroom window, but I can't hear things that go on in the apartment."

"But you heard the sound of the jarring fall?"

"Yes, that even jarred the pictures on the wall."

"And you heard this girl sobbing about her lucky legs?"

"Yes."

"She must have been in the bathroom."

"I think she was."

Perry Mason looked over toward the officer.

"Well," he said, "I guess there's nothing more I can do. If there was a woman in there, it doesn't look as though she's there now, and, anyway, I wanted to see a man. I've got to go back to my office."

"I can reach you there any time?" asked the officer. "You may be wanted as a witness. I don't know what's in there. Maybe nothing, but I don't like this business about the jar that shook the pictures on the wall."

Perry Mason nodded, extended his hand with a five dollar bill folded between the fingers, holding it in such a position that the officer could see the bill but the woman could not.

"Yes, Officer," he said, "I can be reached at my office any time. There's nothing that I know. There was no commotion when I got up here. The apartment was silent just the way it is now."

The officer slipped the five dollar bill from between Perry Mason's fingers.

"Very good, Counselor, we'll reach you if we should want you for anything. I'm going to get a passkey and see what's in the apartment anyway."

The woman took a key from her purse and opened the door of the apartment opposite 302. The officer stood aside for her to enter; then followed her in and closed the door. Perry Mason moved swiftly down the corridor and didn't bother to wait for the elevator, but found the stairs and took them two at a time. He slowed to a leisurely walk as he went through the lobby of the apartment house. There was, however, no one at the desk.