Helppp!

I know it's not manga related, but I'm searching for a movie I saw some years ago but can't remember the name.
So I remember the Mc was a guy who didn't believe in magic and was trying to dimostrare that another guy, who called himself a magician and who was blind, was just lying. In the end he prove that the blind guy is lying and he founds out that he himself is the magician.
Someone knows its name?? Plss