/lit/ - Literature

I'm writing a script for a short noir movie, and i'd like some comments on this. It's the first scene.

"It's been five months since my husband died" said the widow, visibly still shocked by the death of her spouse. Her face demonstrated sadness, contrasting with the revolt with the aparent neglect by the police "and I still don't know nothing about what happened. You didn't tell me anything, didn't even come to our house to investigate. His body was buried, and you-"
"Ma'am", interrupted the deputy, who until then typed in a machine by his side, without even looking at the woman's eyes. He wore glasses, and on his desk he had many folders, papers, books and a pen holder "this is your third visit here, and I fear i'll have repeat what I said before. We are doing everything we can to help you. There are no clues that leads us to at least one single suspect, imagine the perpetrator "he grabbed the paper he was typing and put it in a drawer. He put his elbows on the table and clasped his hands, doing a small pause "there is nothing in our power" finalized, getting up, grabbing a folder and putting the hat in his head "i'm leaving. Excuse me."
"But who will help me then?" asked the woman, offended.
"No idea" said the deputy. He chuckled and said, sarcastically: "Maybe a private detective?"

Mystery thread? Or are they beneath even the genre fiction crowd here?

I've only really read Chandler and Christie. Any other non-supernatural detectives good?