Chapter 7 — The House Next Door
The supervisor arrived with narrow floor plans—postwar construction, shared ducts between units along a single wall. If the voice was in the return, it might not come from this house at all.
Patel tapped the drywall beside the vent. Three steady knocks. A pause. Then—faint but clear—three knocks back, from the other side.
“Next door,” Lewis said. “Access panel should be in their utility room.”
