Cordelia Carstairs is a Shadowhunter—she has fought demons since childhood. When her father is accused of a terrible crime, Cordelia and her brother head to London hoping to prevent a catastrophe threatening their family. Soon, Cordelia meets James and Lucy Herondale, and together with them she plunges into a world of glittering ballrooms, secret rendezvous, and meets vampires and warlocks. And she hides her feelings for James.
However, Cordelia’s new life falls apart when a series of monstrous attacks by demons hits London. These monsters don’t look like the ones Shadowhunters fought before—daylight doesn’t scare them, and it seems they can’t be killed. London is put under quarantine…