Inventive systems and methods for retrieving and displaying a plurality of entities associated with a plurality of content sources in response to a search query is disclosed. In preferred embodiments of the systems and methods, the present invention addresses the need to search and relate a plurality of entities across a plurality of content sources, and then displaying the search results in an interactive user interface that simultaneously updates and modifies the display of associated entities and related content. Such searching and relationship generation for a plurality of entities across a plurality of content sources is designed to address and handle the continuing increases and growth in searchable content.