What makes a good thriller?

Genre – The method of categorising based on similarities in their narrative from which the films are constructed.  For instance a type of genre is comedy.

Sub-genre- A identifiable sub-class within the larger film genre, with their own distinctive subject matter, style and formula. For instance a romantic comedy.

Hybrid Genre – Hybrid means a mixture/fusion, so a Hybrid in film means three or more genres  or mixtures of sub-genres.

List of Sub-genres of thrillers:

Action Thriller – Focusing on the thriller, most common in movies with lots of visual effects such as explosions and violence. For example American Heist

Crime Thriller- Focusing on crime, often from the criminals point of view. Contains classic crime scenes often the police force and is all about gathering evidence. For instance the film No country for Old men. 

Mystery Thriller- Subgenre of both mysteries and thrillers, it is much more fast paced then your regular mystery often the protagonist is on the run whilst other smaller crimes are taking place adding tension. For example Gone girl

Supernatural Thriller- The plot line matches that of a classic thriller but contains characters with psychic abilities and other supernatural elements. For instance the movie Miracles.

Disaster Thriller -  Usually a natural disaster is taking place, the protagonist is often trying to prevent this or help rescue others before it is too late. For instance Into the storms.