The Last Hours Tome 1 (Broché)

Love cuts deeper than any blade. Cordelia Carstairs is a Shadowhunter, a warrior trained since childhood to battle demons. When her father is accused of a terrible crime, she travels to London in hopes of preventing her family's ruin. There, Cordelia encounters childhood friends James and Lucie Herondale and is drawn into their world of glittering ballrooms and supernatural salons. All the while, she must hide her secret love for James, who is sworn to marry someone else.
But Cordelia's new life is blown apart when a shocking series of demon attacks devastate London. Now trapped in a quarantined city, Cordelia's friends discover that their own connection to a dark legacy has gifted them with incredible powers - and now forces a brutal choice that will reveal the cruel price of being a hero.