Evidence board

An evidence board (also known as a "conspiracy board," "crazy wall," or "murder map") is a common background feature in thriller and detective fiction movies and TV.^[1][2] It features a collage of media from different sources, pinned to a pinboard or stuck to a wall, and frequently interconnected with (usually red) string to mark connections.^[3] A more technical related name for these sorts of visualizations and charts within law enforcement are Anacapa charts which are used for social network analysis.^[4]

A cork board with pins

Evidence boards are associated in fiction with both detective activities and obsessional interests, including those of delusional individuals pursuing conspiracy theories,^[5] hence the alternative names.

Evidence boards can be seen in numerous TV series, including Homeland, Fargo, Sherlock, The Bridge and True Detective.^[6][3]

Evidence boards have also been used as a teaching tool.^[7]