Alfred Hitchcock was a pioneering English director and producer who developed the thriller genre in film. He used innovative camera techniques and shot framing to maximize fear and suspense. One of his most famous films, Psycho, defined the horror thriller genre with its shocking violence and murder of the main character. In more recent decades, directors like David Fincher brought darker tones and violent content to thrillers like Se7en and Panic Room. Christopher Nolan is known for unconventional narratives and redefining the thriller genre with films like Memento and Inception.