After finding fame with a stolen screenplay of a recently deceased unsigned screenwriter a movie studio’s script reader turns to murdering his backlog of budding screenwriters for their movie ideas.

Great ideas Valentin and dpg... We're definitely on the same page.

I think the common thread with the aforementioned films with an anti-hero at the helm is that it's a steady decline in moral ground as the story progresses, until the end, where they either repent and in turn save themselves -- Salieri (the whole movie is a confession...) in Amadues, and even Henry Hill in Goodfellas/ Jordan Belfort The Wolf of Wall Street (albeit both giving up the criminal life begrudgingly -- Hill with his "Noodles and Ketchup.", Belfort with his "Sell me this pen... Sell me this pen... Sell me this pen...) or choose not to repent and get way with murder/ the immoral act, but lose themselves -- Ripley, Bateman, and Griffin Mill...

Not sure which way my guy would go, but I foresee the possibility of a culminating scene at an awards night... For good or for ill...

Thanks for the feedback.

The movie that comes to my mind with this concept is "Amadeus". Like Salieri, the writer is a jealous, frustrated mediocre condemned to have an eye for a good script -- but not the talent to write one himself.

Complications and suspicions ensue.

Another title suggestion "A script to kill for" or "Killer script".
The movie "the player" is really underrated.
Something like that where the main protagonist is an anti h?ros would really work in that setting.
Somebody who starts innocent. Slowly pressure and a taste of success corrupt him until finally he is unrecognisable from the initial guy. He is now as obnoxious and self centered and treat his employees as badly as he was by his former boss.
You could even have him writing a script about himself. A failed scriptwriter who get successful by killing unknown scriptwriters. Everybody love the idea and find him brilliant. However a police officer starts to investigate so he needs something to save himself.
Like in American Psycho, he can't even confess, because somebody else is now taking credit for the idea.