The Brotherhood of Darkness Books in Order

The Brotherhood of Darkness is a dark contemporary romance collaboration by Sapphire Knight and Hilary Storm. It begins with The Order of Obsession, then continues in Vow of Vengeance. The two books follow an intense, dangerous relationship shaped by a secret society that expects obedience and makes its own rules.

At the center are Iris and the two men drawn into the society's demands with her. Beau and Kingston are longtime friends, but the group they want to join turns their loyalties and their relationship into something much more complicated. What seems like a chance at belonging soon comes with conditions none of them can safely ignore.

The society is always watching.

This is not a campus story with ordinary club politics. The organization holds real power over the people caught in its orbit, and initiation is only the beginning. The pressure comes from threats, tests of loyalty, jealousy, and the question of how much each character is willing to give up to protect the others.

The Order of Obsession establishes the relationship and the world around it. Vow of Vengeance picks up after the first book's events and raises the stakes as the society proves it has not finished with them. These books work best in order because the second story depends on the emotional fallout and danger already in motion.

Expect dark themes, possessive romance, secret-society suspense, and a relationship that has to survive outside forces as well as its own complicated feelings. The tone is heated and tense, with the characters forced to decide whether love can be stronger than the power trying to control them.