Again she laughed, but her face sobered the moment he turned away and left the room. A wiser, maturer expression settled over the wide-set eyes and the vivid lips. It seemed as though her talk with her father had left a disquieting impression in her mind. She moved absently about the room, setting things in order here and there, but the far-away gleam in her eyes told that her mind was scarcely aware of what her hands were doing. Presently she stopped before the open window and looked out. A building was going up across the street, and the groaning of derricks and screaming of steam whistles jarred discordantly in the back of her mind. Near the curb a group of laborers were mixing concrete, and a powdery substance was drifting in the air.
She came out of her abstraction with a little start. Her eyes were on the window sill, and she spelled out the characters she had written in the thin layer of dust.
“G-r-a-y P-h-a-n-t-o-m,” she mumbled, puzzled and somewhat annoyed with herself. The faint pencilings in the dust seemed all the stranger because she had not been thinking of The Gray Phantom. Instead, her mind had been occupied by Mr. Shei and what the morning newspapers had said about the tragedy in the Thelma Theater. The accounts she had read had been largely speculation and conjecture. The dying woman’s strange laughter and her mysterious allusion to Mr. Shei had afforded material for columns of vivid and imaginative description. The medical examiner had reluctantly admitted that Miss Darrow’s death might have been caused by a poison administered hypodermically, but he had added that the symptoms were strange to him, and that he knew of no drug producing just such effects. A number of toxicologists had been interviewed, but they had declared that the few facts at hand were not sufficient to enable them to form an opinion, and the disappearance of the body rendered it doubtful whether the cause of death would ever be learned definitely.
Only one thing seemed beyond dispute and that was Mr. Shei’s complicity in the affair. The elusive and highly accomplished rogue already had a score of astounding crimes to his record, and the Thelma murder was hedged with all the mystery and baffling detail with which he loved to mask his exploits. Miss Darrow’s dying words were scarcely needed to turn the finger of suspicion in Mr. Shei’s direction. The absence of clews, the uncertainty in regard to the motive, the audacity that marked the crime itself as well as the subsequent snatching away of the body, all indicated a boldness and a finesse that left little doubt of Mr. Shei’s guilt. Even if his own hand had not executed the crime, it seemed practically certain that his mind had planned and conceived it.
But who was Mr. Shei? The whole train of surmises and theories pivoted on that question. Not much was known of him save that he had a passion for tantalizing the public and keeping the nerves of the men at headquarters on edge, and that his achievements had not been equaled in scope or brilliance of execution since The Gray Phantom’s retirement. He took a diabolical delight in flaunting his name before the world while keeping his person carefully out of the reach of the law’s long arm, and even the name was a challenge to the police and a teaser for the public imagination. Someone versed in dead languages had discovered that the word “shei” was the ancient equivalent of the modern x, the symbol of the unknown quantity, and it was generally agreed that the name fitted the elusive individual who bore it.
Yet the name meant nothing. It was only an abstraction, for it afforded no clew to its owner’s identity. The night before, while she sat beside her father in the Thelma Theater, a vagrant flash of intuition had come to Helen. She had seen the solution of the mystery in a swift, dazzling glimpse. The revelation had stunned and nearly blinded her, and thoughts had crowded upon her so thickly that she would have been quite unable to clothe them in words. The idea carried to her by that intuitive flash had seemed clear and unquestionable. It still seemed so, but her talk with her father had disturbed her a little and turned her thoughts in a new direction.
Again she looked down at the tracings in the dust. A smile, faint and wistful, reflected her softened mood, and a light of wonder and gentleness flooded her eyes. She reached out a hand to obliterate the telltale pencilings, but something restrained her. Besides, a freshly forming layer of dust was already blotting them out.
The telephone rang in the adjoining room, and she hurried away to answer.
“Miss Hardwick?” inquired a drawling voice which she instantly recognized. “Lieutenant Culligore speaking. I’m at the Thelma Theater. Wish you’d come over right away. I want to ask you a few questions.”
Before she could reply, he hung up. Her face grew suddenly tense. Culligore’s brusqueness piqued her, though she knew it was characteristic of the man, and she felt he had taken undue advantage of her by giving her no chance for argument. She did not wish to see him, yet she knew she could not escape him by merely ignoring his request. Anyway, she reflected as she hastily dressed for the street, it would be interesting to learn Culligore’s theory of the murder.