Mystery of the Semi-Detached

He was only waiting for his sweetheart. The semi-detached house stood quiet in the twilight - his half warm and lit, the adjoining half empty and dark. But when a light flickers behind the shuttered windows next door, curiosity gives way to a creeping dread that something - someone - is watching from the other side of the wall. In barely a dozen pages, Nesbit builds a masterclass of mounting terro...