- Crime at the core of the narrative.
- Mystery to the spectator ( enigmas ) - Solved at the end of the film conventionally.
- Suspense -key to a thriller.
- Micro elements - musical score, suspense and tension.
- Low key lighting, adds to mystery / suspense.
- Often oblique / canted angles.
- Distort image, mystery.
Protagonist - ( main character / hero ) and antagonist ( a Villon or force, mainly paranormal working against protagonist.