This interactive force-directed graph visualization enables hierarchical exploration of the Les Misérables character network and email-Eu-core datasets. Users can drill down into community clusters or drill up to view higher-level groupings, with the graph layout recalculating at each level. The implementation uses d3.forceSimulation for physics-based node positioning, d3.zoom for pan and zoom capabilities, and dynamically loads network data from remote text files. SVG rendering displays nodes and links, with community membership encoded through node colors. The drill-up/drill-down navigation relies on a stack-based data structure that stores previously viewed hierarchical levels.