The knocking came when the wind turned east. Every keeper had a theory about it. During renovation, Priya found a loose wooden strip behind a service panel and a note explaining how to wedge it quiet.
The note was signed by the keeper who died before completing the repair. Later workers had replaced the panel without seeing it. His practical explanation disappeared, while stories about the knocking multiplied in the visitor book.
Priya photographed the strip in place before removing it. The rhythm matched the sound on an old visitor's recording. She could account for the noise without explaining why it frightened one listener and comforted another. A former keeper said it had told him the wind changed while he was reading indoors.
The renovated tower was quiet. Priya kept the recording in the exhibition alongside the repair note, letting visitors hear what no longer happened. The absence was part of the building's history too. Repairing the fault did not require pretending that the years of listening to it had meant nothing to the people who lived there.