There is a spell of eighth Doctor books where the intention of each of the writers seems to have been to smash the Doctor Who cliches and try something entirely new for the range. This installation flies in the face of that trend and gives you a story that piques all the right nostalgic familiarities while making it big budget in such a way that I doubt you could ever see it on screen.
Sabbath actually spends time with the Doctor, and we learn more about him than we have since Adventuress of Henrietta Street. Fitz and Anji do a good deal of first person narration - which I always welcome from them. The setting is fantastic - and the 'monsters' of the piece are among the most frightening I've known in the DWU.
I rate it 4 of 5.