The latest installment in the Thursday Next series is really a gift to fans of the first four books; Fforde did a lovely job of tying up all loose ends in Thursday's story at the end of Something Rotten and could have gone the rest of his career without ever returning to the character, but for the fact that book fans can be just as rabid as any other kind and they wanted some more Thursday (I include myself among this number). First Among Sequels jumps ahead fourteen years from the end of Something Rotten, landing in 2002 and focusing on Thursday and Landen's life post-SpecOps - it's been disbanded - as they raise their family and try to get along with normalcy; Thursday runs a flooring-and-carpet business along with some other ex-SpecOps pals, such as Spike Stoker, Stig the Neanderthal, and Bowden Cable. It's all really a front for the fact that the gang is still involved in their old tricks, something that Thursday hides from Landen and the kids, as well as the fact that she is also still pulling double duty in the BookWorld at Jurisfiction as an agent. Meanwhile, Thurs and Landen are trying to figure out why Friday doesn't show any interest in the ChronoGuard (one of the few remaining SpecOps divisions) even though he's pretty much destined to be its shining star. There are also appearances by past characters like Joffy, Aornis Hades and the Minotaur, along with Thursday's counterparts in the BookWorld, the result of her having books written about her after her previous escapades. Even Goliath comes in again. All in all, it's really just fun for the fans with a chance to return to an old favorite character.
If any of the above made sense to you and maybe caused you to squee a bit, I suggest you pick it up. If you have no idea what the hell I'm talking about, move along.