Sebastian St. Ives tries to protect Amelia Haldwell, who, unbeknownst to herself, holds the key to freeing a bloodthirsty vampire, from the vampire's evil schemes, and from his own growing attraction to her.
Accepting Lucien Valin as a tenant in her home, Jocelyn Kingly, shunned by the town due to a past scandal, roams London's streets at night, helping the most wretched, and is unaware that soon she will be the one who needs help.
Infiltrating London high society to earn the trust of Simone, Lady Gilbert, who possesses an amulet of unimaginable power, vampire Gideon Ravel is unprepared for her beauty and wit until she reveals a secret that is darker than his own.