Dayo finished the first Version Four meter at eleven forty-seven that night. Not a complete unit. A functional prototype — the calibration range doubled from what he had been building for Serwa's profile, the frequency sensitivity extended to cover a range he had not needed to cover before because no profile in the framework had required it. He tested the prototype against the standard meter array in the substation's main hall. The standard meters read the ambient field at their usual levels. The Version Four prototype read the same field and showed a second layer — a component present in the ambient reading that the standard meters could not detect. Dayo looked at the second layer reading for a long time. He called Hunter. Hunter answered on the first ring. The prototype is showing

