Lots of detail. Try to streamline it some. I would focus more on who your main character is as an...
Stranger than Fiction (2006)
A version framing the story to include the MPR for development purposes:
A repressed IRS agent starts hearing the voice of an unknown author plotting his murder in her next crime novel. Unable to find and stop her, he starts to live the life he has always wanted to.
An IRS agent starts hearing the voice of a writer. She is plotting his murder in her book but he finds out it’s for real. In the IRS, it should be a breeze to find out who and where she is, before he’s murdered as written.