Whistle is a supernatural horror movie, the main theme of which is a cursed Aztec Death Whistle that releases harmful manifestations on those who can hear the frightening note. In the start of the book, there is a gag of hell- unknown murders such as that of a star athlete who bursts into fire. Chrys Willet, a transfer student who is the heir of the old locker belonging to Mason, finds the whistle and unwillingly triggers the curse. They are plagued with ghosts of their own death as they blow the whistle, and they are forced to face the unavoidable destiny with the curse. The spread of the curse by sharing blood and its avoidance with the help of death and resurrection is discussed, which puts more tension and desperation in the film.
The horror is depicted by the students trying to comprehend and avoid the curse, some of them trying to sacrifice others or not be in contact with their apparitions. Their quest to end the curse backfires resulting in the tragic death of their friends in hideous manners as they reflect their eventual death. The novel incorporates aspects of occult legend and folklores specifically in the figure of the grandmother to the main character Ivy, who unveils roots of the curse, the way it can be removed. Nonetheless, the curse goes on taking lives, reminding the readers about the inescapable aspects of death. The movie is rather tense and suspenseful, with the focus on the topics of mortality, sacrifice, and helplessness of human beings before the supernature.
The ending of the film is filled with a shattering climax, showing the curse is not finished. Asha, a new student, opens her locker without knowing about the existence of the coincidence and in the rush of reckless curiosity she blows the whistle at a school assembly. The scene concludes with an air of shock and terror because all people in the auditorium are condemned to her actions. Whistle gives the viewer a haunting thought of how certain curses have become immortal as they are lying below the surface, waiting to hit once more and how the cycle of death and horror may not stop at all.
