Perry Mason moved cautiously through the night shadows. In the doorway of the Colemont Apartments he paused to listen. Along Norwalk Avenue lay the silence of staid respectability. From the main boulevard came the noise of an occasional horn, the whining sound of cars rushing through the night. The midnight carousers, turning from gay revelry to a contemplation of the morrow's work, sought to atone for wasted hours by crowding automobiles to greater speed.
The entrance to the Colemont Apartments was dark and silent. A short distance down the street, the Bellaire Apartments glowed with illumination from an indirect lighting fixture which shed a soft radiance over the foyer, the mail boxes, call bells and speaking tubes. Some of this brilliance radiated to the sidewalk, filtered into the entrance of the all but obsolete apartment house where Moxley had met his death. Perry Mason stood for some five minutes in the shadows, making certain that no patrolling steps were beating down the sidewalk, that no police radio car was cruising in the vicinity.
Earlier in the day Perry Mason, working through a real estate agent, had rented the entire building. Three of the apartments had been vacant for several months. The fourth had been rented by the week, furnished, by Gregory Moxley. The march of progress had doomed the old frame building to eventual destruction. Tenants demanded more modern apartments. The owners of the building had been only too glad to accept the rental offer made by the lawyer's representative, without inquiring too minutely as to the purpose for which the building was to be used, or the identity of the tenant.
Mason took from his pocket the four keys which had been delivered to him. Shielding the beam of a flashlight under his coat, he selected one of the keys, inserted it quietly in the lock and paused once more to listen. A car turned off the main boulevard and whined past the street intersection. Mason waited until it had reached the next corner before turning the key. The lock clicked, the door swung open and Perry Mason stepped into the darkness, pausing to close and lock the door behind him. He groped his way up the stairs upon cautious feet that kept crowding the side of the stair treads, lest they should make unnecessary noise.
The apartment that had been occupied by the murdered man covered the entire south side of the upper floor. Street lights, sending beams through the windows, furnished sufficient illumination to disclose the outlines of the furniture.
What had, at one period of the history of the house, been a front bedroom was now remodeled into a living room. Back of it, a room had been fitted as a dining room, and back of the dining room was a kitchen and a corridor. The corridor led to a bedroom in the back of the kitchen. A bathroom opened from the bedroom. Perry Mason moved quietly through the room, checking the articles of furniture against the copies of the police photographs which he carried in his hand and which he illuminated with his small flashlight. He moved to the window which looked out toward the Bellaire Apartments. That window was now closed and locked. Perry Mason made no effort to raise it. He stood by the window, staring at the dark apartment directly opposite, an apartment which was, he knew, occupied by Benjamin Crandall and wife.
Perry Mason moved back across the room, out into the corridor and entered the kitchen. Over a gas stove he found what he was looking for.
The lawyer tiptoed to the window, carefully pulled down the curtain, making certain that it was fixed in an even position at the bottom, so that no light would trickle through. He snapped on his flashlight, took from his pocket a screwdriver and a pair of pliers, a roll of adhesive tape and some wire. He picked up a chair, carried it across to a point of vantage, stood on the chair, and let the circle of illumination from his flashlight rest upon the electric bell which had been screwed into the wall. Working with painstaking caution, Perry Mason unfastened the screws, disconnected the wires, removed the bell from the wall. When he had it in his hand, he carefully studied it, then stepped down from the chair. Using the beam of the flashlight to guide him, he walked to the head of the stairs. Here he had placed a package which had been under his arm when he entered the apartment.
He untied a heavy cord, opened the package and disclosed four buzzers, similar in appearance in every way to the bell which he had taken from the wall above the gas stove. The only difference was that the one he had removed was a bell which rang by agitating a clapper between two hollow hemispheres of metal; while the others were buzzers which gave forth an explosive buzzing sound when the current went through the coils.
Mason carried one of the buzzers back to the kitchen, climbed on the chair, screwed the buzzer into position and saw that the wires were connected. Then he replaced the chair and raised the curtain. He paused to listen, picked up his package and tiptoed down the stairs. He waited for several seconds before he unlocked the door and slipped out into the cool night air.
Hearing no sound, he locked the door behind him, took another key from his pocket and opened the door of the lower apartment. This apartment exuded a smell of musty closeness—a smell that assailed the nostrils with a message of untenanted neglect. Perry Mason found the call bell in the kitchen, and replaced it with a buzzer. Then he raised the curtain and slipped silently out into the night.
He next opened the door which led to the upper apartment, opposite the one in which Moxley had been killed. Working swiftly and silently, he again disconnected the call bell and installed one of the buzzers. He was on the point of leaving the apartment when the beam of his flashlight picked up the stub of a burnt match in the corridor. The match was one of those waxed paper affairs which had been torn from a pocket package. Mason slid the beam of his flashlight along the boards of the corridor, soon picked up another match stub, and then another. He followed those stubs to the back porch, where the light fuse boxes for the apartment were kept. Here was also a place for the delivery of groceries and garbage.
Mason noticed that a similar porchlike platform projected from the apartment on the south which Moxley had occupied. An agile man could easily slip across the intervening space, climb a railing and find himself in the back of Moxley's apartment, with access through a corridor and kitchen to the bedroom where Moxley was murdered.
Mason stepped across to the adjoining porch. Here he found one more match, and then, over in the corner where it apparently had been discarded, the empty container from which the matches had been torn. It was of waxed pasteboard with a flap which folded over the matches. On the back of this folder was printed a cut of a five story building, below which appeared the printed words "Compliments of the Palace Hotel, the best in Centerville."
Perry Mason wrapped the bit of pasteboard in a handkerchief, slipped it in his pocket. He retraced his steps, left the upper apartment and made a brief visit to the remaining lower apartment. When he left the house, there was not a single electric doorbell in the building. Each one of the four apartments was equipped with buzzers.
Mason wrapped the bells carefully in the heavy, brown paper, tied up the package into a compact bundle, listened to make sure no one was about, and then stepped out from the shadows of the foyer to the sidewalk.