A demoted FBI agent is sent on an administrative duty in a remote border town but, when a body is discovered, he tries to solve the mystery despite the reluctance of the local police and his boss.

OK. Give us the logline for the pilot and obviously it needs to work as a standalone movie and also as a setup for the series. You'll probably need 50-70 words to deliver all of this.

Thanks for the comment.
This is a pilot for télévision. I suspect that I have mixed the logline for the Pilot and the logline for the Show unconsciously.
Back to work ...

Nice set-up for your protagonist. Your logline really needs to address a highly dramatic action or obstacle along with a worthy antagonist to test your protagonist.