This page is an experiment, and it is fair to say so at the top. Every other diagram in this library is a family tree with an emotional layer drawn over it. This one has no family tree at all: no marriages, no descent, no children — only eight people and the ties between them. Donna Tartt's 1992 novel is the right subject for that, because its kinship genuinely happens offstage. The Macaulay twins are orphans raised out of view. Bunny Corcoran's brothers exist mainly as a joke about his family's money. Francis Abernathy's grandfather is a threat rather than a character. Building a plausible-looking family tree here would have meant inventing people, and a diagram that invents people to look complete is worse than one that admits what it does not know.
What the novel does document, in obsessive detail, is an affinity structure — and that turns out to be drawable. Julian Morrow, a classics tutor who admits five students and no more, sits outside the ring: he assembles the group by charm, is worshipped by it, and abandons it the moment the killing touches him. Inside are Henry Winter, wealthy and remote and fluent in more languages than he has uses for, and Richard Papen, the scholarship student from Plano who invents a better background to be let in. They are placed opposite each other because the book is a study of what Richard will do for Henry's approval, and Richard's unreliability is the method by which we learn any of it.
The twins are the diagram's densest knot. Charles and Camilla Macaulay are enmeshed past the point of health — the novel allows the incestuous reading without confirming it — and most of the group's desire lands on Camilla: Richard's unreciprocated infatuation, Henry's quiet involvement, and her brother's possessiveness, which turns to drink and then to violence as Charles comes apart. Bunny is the group's weak point and its first casualty. His drift from sponging nuisance to blackmailer is what gets him killed, and Henry organises it. Marion, Bunny's girlfriend, sits on the far edge of the map for a reason: she is the only relationship any of them has outside the circle, which is exactly why nobody takes it seriously.
Reading a diagram with no descent lines takes a moment's adjustment, and the adjustment is the point. Without generations to anchor it, position stops meaning age or lineage and starts meaning proximity — who is central, who is opposite whom, who is outside the ring. Every line you see is an attachment somebody chose. For a novel about a group that replaces its families with each other and then discovers what that costs, the absence of the family half of the notation is not a limitation of the diagram. It is the argument.
A practical note, since this is the first page of its kind here. The automatic layout could not originally handle a diagram like this: generational depth is computed from parent-child links, so with none present every character was assigned to generation zero and laid out along a single horizontal line, with every relationship line running straight through whoever happened to sit between the two people it connected. The ring is the fix — on a circle each tie becomes a chord across an empty middle and crosses nobody. If it reads more clearly than you expected from a genogram without a single family tie in it, that is the finding.
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