Depraved -

: It can represent a state of being "morally bad, evil, or fallen," often used to describe serial killers or those who show indifference to human suffering .

If you are writing a synopsis for a book or film (like the horror film Depraved by Larry Fessenden), you might use a tone like this: depraved

To describe a person or act that is morally corrupt, experts often focus on the absence of decency: : It can represent a state of being

: Altered from its original, "good" course to something harmful. Degraded : Lowered in character or quality. or disturbing psychological elements .

: Fans often use "depraved" to categorize books that include graphic gore, torture, or disturbing psychological elements .