England is… rainy. And far more dangerous than Tessa Grey thought – as she has to find out when to witches pick her up and tell her they’ve her brother in their custody. And will kill him if Tessa doesn’t learn to change her shape… and marry a man she never met before. Fortunately, the young Shadowhunter Will Herondale comes by and decided to save her... Slowly, Tessa begins to understand what hides under London's civilized facade – a world full of demons, vampires, werewolves, witches, fey and shadowhunters, of course, who keep the order. But where does Tessa fit in? And why would the Magister give anything to have her in her power? With the help of the secretive Will, the dying Jem and the other inhabitants of the institute, Tessa begins to dig deep in the history of her family – and finds out that more lives are at stake than she thought possible.