What is a thriller?

The following text was taken from Wikipedia.

Thriller is a broad genre of literature, film, television, and gaming that includes numerous and often overlapping sub-genres.

Thrillers are characterized by fast pacing, frequent action, and resourceful heroes who must thwart the plans of more-powerful and better-equipped villains. Literary devices such as suspense, red herrings and cliffhangers are used extensively.

The genre is a fascinatingly flexible form that can undermine audience complacency through a dramatic rendering of psychological, social, familial and political tensions and encourages sheltered but sensation-hungry audiences, in Hitchcock's phrase, "to put their toe in the cold water of fear to see what it's like."[citation]