This document provides an overview of the spy-thriller genre including its history and conventions. It discusses how Alfred Hitchcock helped establish many conventions in the 1920s-1940s through films like The Lodger and The 39 Steps. More recently, spy-thrillers contain more violence and modern plots. Key conventions discussed include narratives involving heroes facing danger, the use of sound and music to build tension, as well as lighting, editing, camera techniques and settings that create mystery and suspense.