Chapter Five: A Number With No Gauge to Match It

The fifth slip was different from the first four in a way that took Reva a full day to notice, because at first it looked identical: cream stock, ink dated ahead, a tide height recorded to the centimetre. What was different was the location. Every previous slip had recorded a reading from the north jetty gauge — the only gauge the harbour office had ever operated. This one was marked for a second gauge, at a location she did not recognise, referenced by a name that did not appear on any chart in the building: the Ashgate Reach.

She spent an evening with every map the office owned, going back to 1809, and found nothing by that name. She spent a second evening with the county archive’s historical charts, courtesy of Denholm’s forensics contact, and found nothing there either — until, on the third evening, in a proposal document from eleven years prior, she found a rejected harbour-expansion plan that would have extended the jetty half a mile further along the coast, to a stretch of water the plan’s authors had informally labelled, in a margin note never meant for the public record, Ashgate Reach.

The expansion had been cancelled for lack of funding. No gauge had ever been built there. There was, as far as any document in the building could prove, no such place — not yet.

Reva showed the slip to Denholm the next morning. He read it twice, the way he always did, and then looked at her with an expression she hadn’t seen on him before: not the mild concern of a column that didn’t sum, but something closer to the look of a man watching a door he had always assumed was decorative begin, very slowly, to open.

“They’re not just sending us numbers early,” he said. “They’re sending us numbers for a place that doesn’t exist yet either. Reva — I think the ledgers aren’t predicting the tide. I think they’re predicting the harbour.”