They stepped out into the twilight, toward the blue feathers and the open door. The house finch’s nest sat forgotten behind them. Elara knew, with the certainty of a true everything investigator, that something far stranger than a sock thief was waiting inside Mrs. Gable’s house.

Not just any sock—a single, electric-blue, calf-length sock with tiny rubber anchors on the sole, designed for grip during indoor cartwheels. Its twin lay forlornly in the laundry basket. The rest of the household shrugged. Elara, age eleven, did not.

They began the ritual. Observation Phase. Elara knelt, pressing her palm to the beige carpet. "Trace evidence. A faint, sugary residue leading from the laundry room to the living room. Path of travel: diagonal, suggesting haste or a low center of gravity."