Irn Fey Series-( Julie Kagawa)

The Faery realms have always weathered the clash of Summer and Winter fey, the Seelie and Unseelie Courts. Now a new breed of faery has emerged to challenge both... to their peril. Forged by Man's insatiable pursuit of technological superiority, the terrifying Iron fey are massing...and the fate of all faeries hangs in the balance. The greatest weapon in this epic magical war? A half-human teenage girl.