Cal’s siblings—Mori, Harlow, and a fourth brother left in Hell—feature as prominent side characters, each set to lead their own future books. Themes and Tropes
The story centers on , the eldest son of Lucifer and the former "Butcher of the Ninth Circle," who now runs a bookstore in the human world. Cal has never sought a long-term relationship, especially with a human, but his life changes when he meets Oscar , a brokenhearted English teacher. Devil’s Mark by Lark Taylor
A central focus on Oscar's healing from domestic violence and Cal's unwavering support. Cal’s siblings—Mori, Harlow, and a fourth brother left