After Graham tells the newspaper writer Lounds to leave him alone, Graham and Crawford are waiting on a street corner. In one scene Graham is about to light a cigarette. When the camera angle changes, the cigarette is no longer there.
I have noticed the cigarette glitch each of the many times I have seen this movie. Also, during that very shot, Graham is pretty upset, yet when the camera cuts to him he is smirking. AND, when he says "That's Houdini you're looking for." has always bugged me. Houdini was primarily known as an escape artist. I would have preferred Kreskin, maybe. (But I got the point.)
Unrelated complaint - In the DVD Director's Cut of the movie they try to fake us out into thinking that it is in shadow box, when actually they just took the TV aspect ratio and blacked out the top and bottom. Lot's of missing foreheads. AND, at the climax of the movie, instead of seeing Graham running out of the woods you just see an empty window! Now that I think about it, I'm going to post my very own slip-up about this.
In spite of everything, this is still a great movie.