The document discusses the history and evolution of horror movies from their roots in 19th century Gothic literature through the present day. It describes how early silent films from Germany in the 1920s helped establish the genre. The 1930s saw a rise in mad scientist and monster movies influenced by books like Frankenstein. The 1950s brought mutant creatures and alien invasion films capitalizing on nuclear fears. Slashers and graphic body horror became popular in the 1980s. Modern horror continues to play on real-world fears and update classic films with new scare techniques.