Thriller is a broad genre of literature, film, and television programming that uses suspense, tension and excitement as the main elements. Thrillers heavily stimulate the viewer’s moods giving them a high level of anticipation, ultra-heightened expectation, uncertainty, surprise, anxiety and/or terror. Thriller films tend to be adrenaline-rushing, gritty, rousing and fast-paced. Literary devices such as red herrings, plot twists and cliffhangers are used extensively.