Leo Voss
The sixteen-year-old narrator who grows up pressing his face to his father's locked glass. He becomes his father's documentarian, then his legal guardian at seventeen, and finally a civil engineer who hunts real cracks—turning inherited obsession into a profession.
- Appears in:
- Part 1: The House with Locked Doors
- Part 2: The Inventory of a Breaking Man
- Part 3: The System and the Son
- Part 4: The Straight Line Left
- Themes:
- Inheritance of the mind
- Madness without violence
- Who counts as unfit