The Fourth Side of the Triangle by Ellery Queen

got to get back to the galleys.”
    â€œCan we do this again soon? Tomorrow?”
    â€œI shouldn’t …”
    â€œAnother session at your place, then lunch again?”
    â€œGet thee behind me! All right, I surrender,” and that was that. He took her back to Fifth Avenue, and she talked shop all the way, Dane scribbling away.
    Taking stock of the afternoon, he came to certain conclusions about Sheila Grey. She was accessible, at least in the sense that what Sheila fancied, Sheila took. Had her affair with his father begun in much the same way—directly, without persiflage? Had she run into Ashton McKell in the elevator, decided then and there, This man is for me , and invited him up for a drink?
    He found himself wishing that he were meeting her under other circumstances. He admired her honesty of mind and manner, her forthright differences from most women—even the sprinkle of freckles he had faintly made out in natural light. Oddly, she did not arouse a man’s fighting instinct in the battle of the sexes. You could move comfortably in on her, without fuss, and she would either reject or accept in an uncomplicated way. He liked that.
    Dane sighed. Between himself and Sheila Grey stood his father’s selfish arrogance and his mother’s helpless self-denial. This woman had chosen to become his father’s mistress a couple of dozen feet above the head of his mother; she would have to take the consequences.
    But the only sinister thing in their growing relationship skulked in his own heart. Sheila was delightful. She chewed popcorn like the teenagers around them in a drive-in movie, watching a Blob from Outer Space crush tiny people underfoot and topple buildings until the clean-limbed young scientist with the gorgeous laboratory assistant destroyed him with his newly invented death ray. She clapped her hands at a tiny place he introduced her to, run by devotees of a Hindu sect, and ate her curds and whey as if she had stepped out of a Mother Goose book. When the bearded proprietor pressed a piece of fig candy on her, saying, “It promotes regularity, Sahibah, ” Sheila smiled, and took it, and remarked, “I wish something could be done to promote regularity in high fashion. We caught someone using a miniature camera this morning. Naturally I fired him and destroyed the film. But you can’t help wondering if somebody got away with it yesterday. We’ll know about it if copies of our line go on sale on 14th Street, selling for $7.98, the day after our fall showing.”
    It appeared that the art of couture espionage was highly developed. “I could give you material for a dozen novels,” Sheila said moodily.
    â€œI’m having enough trouble with this one,” Dane said, grinning. “Incidentally, how about dinner at eight?”
    This time her gaze impaled him. “You’re silly,” she said. “Nice, though. I’ll be wearing a mantilla and chewing on a red, red rose.”
    Dane began to feel uneasy. Things were going too well. But then he shook the feeling off.
    They dined at a little Belgian restaurant with outrageous prices, took a ferry ride to Staten Island, visited Hoboken, where they strolled about for a bit, agreeing that parts of the city had a Continental air—Dane compared it to the 14th Arondissement. On the ferry coming back, standing side by side in the bow, he took Sheila’s hand. She might have been any woman he liked. Her fingers lay cool and friendly in his clasp; the breeze lifted her hair and played with it. The great docks loomed, and Dane felt a twinge. Quite without calculation he said, “How about the Central Park Zoo tomorrow? The grilled armadillo there is out of this world.”
    â€œYou’d produce it, too.” Sheila’s laugh sounded wistful. “No, Dane, I’ve been playing hooky far too long. You’re wicked-bad for me.”
    â€œSupper? I know an Armenian