The document traces the history of the mystery/thriller genre in film from the 1940s to 2000s. It provides examples from each decade such as Dressed to Kill (1941) and The Big Clock (1948) in the 1940s, Vertigo (1958) and Psycho (1960) in the 1950s-1960s, The Attic (1980) and Seven (1995) in the 1980s-1990s, and The Bourne Identity (2002) and Sherlock Holmes (2009) in the 2000s. It notes that mystery/thriller films have changed over time with more realistic effects now possible and more intriguing plots due to developments in technology, ideas, and actors.