Looking for writer to help adapt a book into feature film. I have a strong sense of what story can be but need help fleshing out characters and story arc. The book is a very contained novella that takes place mostly in a police interview room.  It has some ghost/paranormal elements but would play mostly like a mystery/thriller.

Book Synopsis:

It's not that Lily May Holloway is a broken, battered teenager recently escaped from her kidnapper.

It's not that she may or may not have killed him to escape.

The question on Detective Travis Butler's mind is — what exactly does the death of little Tommy Jenkins have to do with her kidnapper?

And why does the man behind the one-way glass want the detective to entertain Lily's tales of speaking to the dead... and being able to hear the thoughts of the living?

Story comps: THE OUTSIDER (HBO), HANNA, and 10 CLOVERFIELD LANE