My Wife's Secret on the Rooftop

Every night, after I fall asleep, my wife always sneaks out of the house and goes up to the rooftop. 001. Waking up in the middle of the night for the third time, the bed beside me was already cold. The alarm clock on the bedside table showed 2:17 AM. Only a few streetlights were on outside the window, casting shadows of trees onto the curtains like menacing monsters. I reached out and touched the spot where Lin Dai usually slept; the lingering warmth on the sheets told me she had been gone for at least half an hour. This wasn't the first time. Last Wednesday, last Friday, and tonight, I've discovered my wife mysteriously disappearing in the middle of the night three times in a row. The first two...