The Demon's Lexicon

In the gripping first book of the Demon’s Lexicon urban fantasy trilogy, a teen named Nick must infiltrate London’s magical underworld to save his brother Alan, who is marked by a deadly demon. As they navigate the perilous Goblin Market and confront the Obsidian Circle, Nick discovers troubling secrets about their past that challenge his loyalty and beliefs. Forced to confront betrayal and protect his family, he must decide between the truth and the bonds of brotherhood he has always fought to uphold.