Tessera Lumen: Jedes Buch, ein Lichtfragment.

She came to map what he loves. He was assigned to show her the way. Nora Voss is a hydrological engineer with a seventeen-point plan, the wrong boots, and a sixty-day deadline to survey the water system of Ironwood Basin for a corporation that doesn't care what disappears when it gets what it wants. Caleb Morrow has lived on this mountain every day of his life. He runs the Search and Rescue team. He knows every ice formation, every hidden drainage, every place the terrain stops being what it appears to be. When the county assigns him as Nora's certified guide, he accepts — because controlling her access is the one tool he has left. But the mountain has its own plans. In the field, their opposite ways of knowing collide and, slowly, begin to merge. Caleb can read a frost-heave crack seconds before it falls. Nora can prove the valley's water runs twelve degrees in the wrong direction on every official map. Neither is complete without the other. Then Nora's data starts pointing toward the truth — and the truth could cost everyone in Ironwood Basin everything. Can two people who read the world in incompatible languages learn to trust each other before the deadline runs out? Some maps tell you where to go. The right guide shows you what it costs to get there.