A 10th Nazgul?

[Hammerhand]

Is there not a difference between a Wraith and a Ring Wraith? The nine each had contact with one of the 9 mortal rings, and this was the route of their incarceration - it is completely different to the Morgul Blade's affliction. The nine hunt the one ring, what evidence is there to suggest a Wraith of different substance would do so also?

Personally, on reading the book, i thought that Frodo would have become a dithering "specter" like figure, serving the Nazgul, yet below them utterly. Legate mentioned this in his post and i am inclined to agree as it ties closely with my own interpretation.

To summarize: By my interpretation alone, it would appear to me that because of the nature of the original Ring Wraiths and how they came to be, it is impossible to replicate them unless in the same fashion. I believe a Wraith and Ring Wraith classification is necessary, being that they are very different in power and authority. I think that if say Frodo was to be stabbed with the Morgul Blade, he would have been inferior and not able to detect the ring, therefore being rendered quite useless to Sauron and the Nazgul - furthermore, i believe one such person would be nothing but a servant to the Ring Wraiths and the Good Lord Sauron.