The old exchange telephone never rang. That was the first thing Mina told visitors. On the night before the building was sold, she found a note beneath its base: if he calls after midnight, tell him the south road is open.
The last operator had died years earlier. Mina searched the shift book for a matching message and found a page recording a storm, a closed bridge and a driver waiting to hear whether he could get home. The note had been a reminder for the next shift, not a message that reached its recipient.
A newspaper photograph showed the driver beside his reunited family the following morning. Mina was relieved until she recognized the surname on the operator's memorial plaque. The driver was his brother. A routine instruction had kept its personal urgency hidden beneath the abbreviated language of work.
Mina placed the note beside the telephone for the final public visit. She did not pretend to know whether the call had come. Visitors could read the message and see the photograph. Between them lay the small interval in which somebody waited for a voice to say it was safe to return.