The last hours: chain of iron (Tapa blanda)

Cordelia Carstairs seems to have everything she ever wanted. She´s engaged to marry James Herondale, the boy she has loved since childhood. She has a new life in London with her best friend Lucie Herondale and James´s charming companions, the Merry Thieves. She is about to be reunited with her beloved father. And she bears the sword Cortana, a legendary hero´s blade. But the truth is far grimmer. James and Cordelia´s marriage is a lie, arranged to save Cordelia´s reputation. James is in love with the mysterious Grace Blackthorn whose brother, Jesse, died years ago in a terrible accident. Cortana burns Cordelia´s hand when she touches it, while her father has grown bitter and angry. And a serial murderer is targeting the Shadowhunters of London, killing under cover of darkness, then vanishing without a trace.