‘The Titans Curse’ was perhaps the most engaging storyline of the three books in the series so far, especially enhanced by the more direct role of Artemis within the main plot of the story and pieces falling into place a lot faster to build up to the series finale. It did however introduce a lot of half bloods as primary characters at once for a series that is very much underway now in having Thalia, Bianca and Nico all play crucial roles in the plot. This forces Riordan to continue the habit of writing out one of the main three protagonists for most of the quest, in the case of ‘The Sea of Monsters’ Grover and in this circumstance Annabeth. 

It wasn’t as bad as in ‘The Sea of Monsters’ but Riordan did continue to reexplain things as if we hadn’t read the preceding two books and such remained irritating and I am not sure of how much I like the frequent trope of

characters ‘disappearing’ rather than just being killed off

, but the books are likely leading up to a lot more of that. This did however allow a lot more action and though mythology wasn’t played with to quite the same level of success I believe Riordan did with it in the last books, you can really feel the plot intensifying.