The Castle of Iron A Science Fantasy Adventure

It's like this... I am a psychologist at a university in Ohio--very solid state, solid job. What with one thing and another my wife happens to be a fictional character from a poem. This is hard to explain. When she disappears into another world, it is much harder to explain--particularly to the cops. When I follow her with a magic carpet, a werewolf, and some spells that don't quite work--it's impossible to explain. Unless, of course, you read the book...