The Infernal Devices Series by Cassandra Clare is set in Victorian London and follows Tessa Gray, a young woman who travels to England searching for her missing brother and discovers that she possesses a mysterious supernatural ability. She is drawn into the hidden world of the Shadowhunters, where she becomes caught between the powerful Magister and the London Institute, while forming close relationships with Shadowhunters Will Herondale and Jem Carstairs. As demonic forces threaten the Shadowhunter world, Tessa and her allies uncover secrets about her past and become involved in a dangerous conflict that will test their loyalties, friendships and love.