After Hannah removes the glass box covering Sherman's hat, the box reappears in reaction shots, and is gone again when the camera goes back to Hannah.
Lady Wadsworth tells Hannah she could not catch the book since she cannot touch anything in the "spectral world." Yet much earlier in the film, the two women shake hands.
While the film is set in Georgia, the bar tanner is seen drinking at early in the film is Reservoir Bar in Ybor city Florida. This can also be shown at the shot of the front of the bar the Pabst Blue Ribbon neon sign says Ybor City.