Camera Work !!

When discussing camera shots within a Mystery/Thriller, one of the key shots are close ups and extreme close up shots. They showcase the vulnerability and in depth emotion of the character, and also establishes their importance within the narrative. Directors use close ups to draw objects or images as significant like the directors of Prisoners use close-ups on faces and objects to create suspense and uncertainty about who is telling the truth, likewise Hereditary is considered one of the most scariest movies due to its amazing and shaking camera work and composition (Of course along with the story line)
Wide shots and master shots are not often used in Horror or Thriller movies since they take away from the movie's cramped, claustrophobic vibe and aesthetic. Medium shots are used in dialogue-heavy scenes to convey the characters' emotions through body language; in intense conversations, over-the-shoulder shots may be used to demonstrate both characters' presence. 

Dutch Angles are heavily utilized due to their mind boggling ability to make the watcher feel the uneasiness and the grave danger the movie is actively trying to portray. High angles are actively used to show dominance and low angles to show submissiveness, like a hero when he beats the antagonist might be shown from a low angle portraying his dominance and how the now defeated antagonist sees him in a more powerful state accepting defeat. This is used in the 1994 movie Lion king, where when Simba beats Scar and he falls down Simba is shown on a ledge from a lower angle showing power and victory while Scar from a high angle showing defeat

Out of all dolly shots have to be my personal favorite, they can be so versatile showing any effect the director wants. Mostly they are used to show the arrival of the impending doom, making the audience uneasy, almost pulling them into the movie or bringing the shot to them. Shots with a similar effect are zoom or the reverse zoom.