City of Glass by Cassandra Clare

To save her mother's life, Clary must travel to the City of Glass, the ancestral home of the Shadowhunters -- never mind that enter-ing the city without permission is against the Law, and breaking the Law could mean death. To make things worse, she learns that Jace does not want her there, and Simon has been thrown in prison by the Shadowhunters, who are deeply suspicious of a vampire who can withstand sunlight.
As Clary uncovers more about her family's past, she finds an ally in mysterious Shadow-hunter Sebastian. With Valentine mustering the full force of his power to destroy all Shadow-hunters forever, their only chance to defeat him is to fight alongside their eternal enemies. But can Downworlders and Shadowhunters put aside their hatred to work together? While Jace realizes exactly how much he's willing to risk for Clary, can she harness her newfound powers to help save the Glass City -- whatever the cost?
Love is a mortal sin and the secrets of the past prove deadly as Clary and Jace face down Valentine in the final installment of the New York Times bestselling trilogy The Mortal Instruments.

This is the third installment in the Mortal Instruments Series (City of Bones, City of Ashes). If you haven't read them yet...do it now! I love this fantasy series and highly recommend it for anyone who likes romance or fantasy especially if you like the "forbidden love" theme a la books like Stephanie Meyers Twilight series. There are a lot of interesting diverse characters and every otherworld creature you could think of from demons and vampires to werewolves and angels. I had a few questions at the end and it seemed to me that there was some plot lines left open but I know there is a prequel in the works and maybe we'll find out more. But like I said, read these books you won't be disappointed!

Score: 4.5 points