Doctor Ferrous Vane

In the Grey Year, Doctor Ferrous Vane stood on the Glass Walk, drew a line across the map in red marker, and told every Beast behind it they were safe. The Grey came three streets past the line. Vane spent the rest of that year on the old road, helping call the Beasts who'd believed them. The map hangs in Friday Hall under glass, red line and all, and Vane walks every newcomer past it on their first day.