The Titan’s Curse by Rick Riordan

 Book three in the Percy Jackson and the Olympians series finds Percy, Thalia (daughter of Zeus), Grover and Annabeth discovering two new half-bloods or heroes. Unfortunately, Dr. Thorn of the school where the new orphaned heroes reside proves to be a monster. He kidnaps Annabeth. When the heroes team up with Artemis, goddess of the hunt, she too is kidnapped and her huntresses join forces with the heroes to effect a double rescue. Their search for Annabeth and the goddess takes them across the United States. Again this is fun with Greek mythology. Here we meet Apollo, whose sky chariot in now a red Maserati and who composes some really bad poetry. More adventure!