The Last Riddle

Margaret hadn't left her apartment in three months, though her mind traveled further each day. The cardboard pyramid sat on her dining table—a meticulous scale model she'd built forty years ago as a young architecture student, back when she still believed structures could outlast their creators. Now, at seventy-two, she understood that everything eventually succumbed to entropy. Even the pyramids were slowly eroding.

Her cat, Cairo, wound around her legs, demanding breakfast. Margaret had rescued him twelve years ago from a shelter that had named him "Pharaoh"—too on-the-nose for her taste. She preferred the subtler geographical reference. Cairo was seventeen now, his movements stiff, his golden eyes clouding with cataracts. They were both aging together, two ancient artifacts in a modern world that had little use for either of them.

The goldfish bowl on the windowsink caught the morning light, casting rippling shadows across Margaret's unwashed dishes. She'd won the fish at a carnival the previous summer—a pathetic prize for someone her age, but the carnie had taken pity on her when she'd correctly answered his riddle about what walked on four legs in the morning, two at noon, and three in the evening. The sphinx's riddle. The answer was man, but Margaret had whispered, "A woman who's forgotten who she used to be."

The carnie had given her the fish anyway.

Her daughter, Sarah, was coming today. The visit would follow its predictable pattern: Sarah would suggest assisted living, Margaret would refuse, Sarah would cry, Margaret would remain dry-eyed and practical. They'd been running this circle for months. Margaret wondered what Sarah would say if she knew the truth—that her mother wasn't stubborn, just tired. That she'd already made her peace with leaving.

The doorbell rang. Cairo trotted toward it, tail held high in a rare display of enthusiasm. Margaret rose slowly, her joints clicking in protest. Through the peephole, Sarah's face was distorted and warped—like looking into a funhouse mirror, like the goldfish's world, everything slightly wrong. Margaret unlocked the door.

"Mom, you look thin," Sarah said, stepping inside with a grocery bag full of organic produce Margaret would never eat. She placed it on the counter beside the pyramid, and Margaret watched her daughter's hand hover over the delicate cardboard structure.

"Don't," Margaret said softly. "It's not stable anymore."

"Nothing is," Sarah replied, and something in her voice made Margaret turn sharply. For the first time in months, the fog cleared. Sarah wasn't here to convince her to move. Sarah was here to say goodbye to something else entirely.

"What is it?" Margaret asked, though she already knew. Some sphinx-like intuition, some riddle solved before it was fully posed.

"The tests came back yesterday," Sarah said, and Margaret watched her daughter's face crumble, watched forty years of running from this moment finally catch up. "It's genetic. The same thing that took Dad."

Margaret nodded once. She'd known, somehow. Had been preparing for it without realizing, building her pyramid, caring for her aging cat, winning that goldfish—collecting small finite things while time stretched infinite before her.

"We'll run the tests," Sarah continued, her voice breaking. "There's treatments, clinical trials—"

"No," Margaret said, and it wasn't defeat. It was clarity. "I'm not afraid."

Sarah stared at her, and Margaret saw her own face reflected in her daughter's eyes—the same face the sphinx had seen, the same riddle asked for millennia. Who are you? What are you becoming?

"I'm not afraid either," Sarah said finally, and it was the first true thing she'd spoken in years. "Just sad."

Margaret reached across the table and took her daughter's hand. The goldfish swam in its endless circles, Cairo purred at their feet, and the pyramid cast its shadow across both of them—small against the window, temporary against the light, but standing nonetheless.