What is that movie- its new & its about a boy who is murdered?

Question

Its about a young boy whos murdered and hes a ghost and this old guy [whos also dead and a ghost] says he needs to solve his own murder. In the previews hes sitting in the classroom and he is talking and throws a book or something but hes dead so no one can hear him or see him.. Theres a girl in the preview and shes in like a school hall & the dead boy yells her name and she turns around and he realizes she heard him... does anyone know the dang name of the movie???

Answer 1

It's called The Invisible