Behind the facade of a stately Boston brownstone,
humanity's last defenses are being marshaled. Called to action
by the enigmatic, brilliant man known only as Mr. Doyle, they
hail from all planes of existence and are born from an array
of supernatural and otherworldly backgrounds and bloodlines . . .
A powerful, demonic force has escaped from the infernal realmputting
the human world in dire peril. It seeks an ally in Danny Ferrick,
the youngest member of the Menageriea changeling who
is already tormented by his dark, primal urges, the legacy
of his demon father. Tempted into sampling the horrific but
thrilling existence of a full-fledged demon, Danny is on the
edge of renouncing all that makes him human. Now time is running
out for the other members of Doyle's team as they struggle
to save their friend from falling into darknessand taking
all of humanity with him . . .