Consume the Spirit of Thine Greatest Enemy, in the Land of Erebus, on All Hallows'' Eve...
Harley has a game plan to stop the third ritual: infiltrate the Cult of Eris and steal back her mother''s soul. But her only way in is through her devious half-brother Finch-the same guy who was Katherine''s most devoted bootlicker not too long ago.
Joining a cult counts as sibling bonding time, right?
Left with no choice but to break Finch out of prison, Harley must play the part of a loyal cultist. Within Katherine''s inner circle, deadly initiation trials and watchful enemies make every moment a battle for survival.
Harley hasn''t forgotten that Finch once belonged to the cult himself, and she wonders if she''ll end up with a valuable new ally... or a knife in the back.