Clockwork Angel By Cassandra Clare Is the first book in the Infernal Devices series.
Tessa moves to london expecting to find her brother and a new start. When she arives her brother is nowhere to be seen, instead she is met by two woman by which Tessa calls the Dark sisters. The evil women teach Tessa about her speical gift and led her into a world with demons, monsters, and shadowhunters. This is a fantastic book and will leave you wanting to read more.