La cadena de hierro

Cordelia Carstairs seems to have everything she's ever wanted. She is to marry James Herondale, with whom she has been in love since childhood; she has a new life in London with her best friend, Lucie Herondale, and James's friends, the Merry Companions; she is about to meet her beloved father and she is the wielder of Cortana, a legendary sword. But the reality is much sadder. Her marriage to James is just an agreement and he is in love with the mysterious Grace Blackthorn; Cordelia burns her hand when she touches Cortana; her father is growing bitter and angry, and a serial killer is killing London's Shadowhunters, slashing their throats under cover of darkness, then disappearing without a trace. Along with the Merry Companions, Cordelia, James and Lucie must track down the bloody killer through the city's most dangerous streets. At the same time, each one keeps a shocking secret.