This network graph visualizes relationships among characters in a murder case dataset, with nodes representing roles like victims, suspects, and witnesses. The force-directed layout uses `d3.layout.force()`. Links are styled with purple strokes and scaled stroke widths based on each link’s weight, while nodes are circles with labels, rendered as SVG. The code loads data from `graphFile.json` using `d3.json` and enables dragging via `force.drag()`.