A breakthrough in an investigation leads Alex McEwan to find the address of an old flame carved into the flesh of a dead murderer. He realises the woman he loves is in danger.
While researching a book on Scottish Masonic buildings, Kate Harlow, McEwan's lost love, has become involved with the occult underground. She has transformed herself into a Nephilim, a human mind fused with an angelic soul.
Robert Saint Claire, Kate's occult mentor, is planning to free the fallen angels, to breed a new race of Divine Kings...and to him Kate is just a tool.
Other shadowy figures of Scotland’s occult underground have their own plans. The Mistress broods in her castle moving people like pawns. Kether has guided Glasgow unseen for centuries; he also wants to free the fallen angels...to kill them.
The lost Name of God.
A secret vault built by the patriarch Enoch.
Together Alex and Kate must prevent the fallen angels returning from the Abyss, from fathering another generation of monstrous Nephilim, and from heralding the Apocalypse itself.