Summary of the key points in the article.

Why "Thrillers" Thrive: Originally published in Picturegoer, January 18, 1936.

The key points to a thriller is to create the thrill the audience want, whilst consciously having the security of knowing they are quite safe sitting in their chairs watching the scene. Thrillers create a kind of life we don't experience ourselves, or the same life but with a difference, a difference which embarks on emotional disturbances which we call "thrills". Although it may not be practicable to experience sufficient thrills at firsthand, it is in our nature to want those "shake ups" whilst watching a tense scene. Within filming thrillers, directors and editors have abled us to experience firsthand thrills artificially. When thinking of creating a thriller you have to consider making the audience project themselves into the character's consciousness. However in order the produce a good thriller which is most effective on our target audience, we have to make the audience feel like they are participating rather than spectators for them to experience the firsthand thrill.
Thrillers let the audience use their imagination, they don't always make it obvious and as graphic as a horror would, thrillers create the intensity but don't horrify the audience and make them uncomfortable. Thrillers often leave the answer to the audience, for example close ups of the character's face to absorb their emotions, in a murdering scene, you may see something bad going to happen but before you see them fall to their death, it's a blackout. This causes the audience to make their own personal questions to what has happened in their mind which helps build the intensity. However, the audience's subconscious is aware that they are safe, sitting in a comfortable armchair, watching a screen.
If the audience's security is undermined, the thrill created is not the kind to please the public. This can occur in many horrors as the graphical scenes show too much detail towards the horrific scene which makes the audience unease, it doesn't appeal to all audience's, a thriller is more subtle.
A thriller may still leave you subconsciously assured on your safety, yet they create that surprise to influence the audience's imagination to play tricks on their mind, this can be done by continuity editing, making you feel part of the scene, the tone in the music can make you build up in your mind this thrilling tail. A thriller can influence the audience to gain sympathy for the protagonist who then gets involved with danger, this helps with making the "thrill" towards the scene as the audience has bonded with the charatcer whilst watching the film.
"The audience thrives on thrills, the cinema thrives on the audience, the director thrives on the cinema, and everybody is happy". Scenes which set the blood pounding through the veins are highly beneficial as audiences like the idea of feeling tense and shocked for that split second within a scene.
In comparison to a horror film, horrors create an entirely different matter, meaning they create an "extreme aversion". To create a distorted view of a tense scene which makes the audience come to an emotional jolt. The scenes are more vicious and dangerous. This is permissible in a horror film. Aspects of horrors only attract certain group of audience as it creates an unnatural excitement for certain people.
Over all a thriller must be wholehearted, the more exciting the better. A thriller creates this suspense as a thriller is leading to various answers, the uncertainty builds the thrill and tension for the audience.

"Let 'Em Play God": originally published in Hollywood Reporter 100, no.47, October 11, 1948.

Within the article it explains the purpose of the mystery to the thriller is to get the audience on the edge of their seats in order to create the suspense. In a thriller it is important to leave the audience unsure of what's happening so they feel like they are part of the scene as the characters don't let on they know what's happening either, the suspense is created by the various possible answers, but no one is sure including the audience. Another way to create suspense for the audience, is for them to know what is going on, yet the characters don't. This make the characters inferior to the audience making the audience "feel like God" as they know what fate the actors face, this creates suspense.
For years thrillers have been refered to as dark mysteries, and chillers as they are brilliant for making "thrills" for the audience by creating a puzzle they have to solve throughout the film.