This is the jaw-dropping moment on-duty cop began kissing an elementary school teacher before having s*x with her inside her classroom. Brian Gilley was barred from ever returning to law enforcement in Tennessee after police concluded an internal investigation into his relationship with teacher Shelby Moss on school property at Castle Heights Elementary School. Extraordinary body worn camera captured part of the tryst, including the moment a student walks into the room about two minutes before the pair lock lips. Read more on the scandal at DailyMail.com #news #bodycam #school