I read this last year. You'd have thought I would have added it at the time.
Basically, this is the story of Jeeves, pre- and post-Bertie Wooster. We get to see Jeeves as a youth, his stint at Blandings Castle learning from Beach, the final fate of Bertie Wooster (marriage AND a title), and Jeeves's final fate as well. Jeeves also gets to hobnob with fictional detectives in the course of his adventures, like Hercule Poirot, Lord Peter Wimsey, and Father Brown, partly explaining his logical abilities later on.
Not as good as Wodehouse but defintely worth a read. It's fast and good for some laughs.