THE TITAN'S CURSE is the third book in the PERCY JACKSON AND THE OLYMPIANS series by RICK RIORDAN.
I mentioned before that I am reading these at the same time as my 10 year old son. (He passes them to me when he is done.)
Not only have I enjoyed this series so far, but the books keep getting better. My son tells me he can't decide if he likes book four better than book three, so I'm excited to move to the next volume in the series. We both agree that The Titan's Curse was better than the first two books, which we both liked as well.
In this installment Percy goes on a quest with other half-bloods to rescue Artemis. I could say more, but it would be too much of a spoiler for both this book and the previous ones.