Nyra Nightbane has spent her life trying to help people.When her fiancé's infidelity is followed by a calculated framing that costs her her career, she finds herself adrift. On her way home from her final night shift, she is carjacked by a man with a gunshot wound, barely conscious. She does what she has always done. She saves him.What she doesn't know is that the man is Rhydian Draven — the Reaper, legend of the underworld, feared across all Mafia and gangs. What he doesn't tell her is that he recognizes her. He saved her once before, nineteen years ago, the night her mother was killed and her world ended. She was seven. She doesn't remember.When forces she cannot identify begin targeting her, Rhydian offers a choice: enter his world as his private doctor and fake fiancée, a political arrangement designed to close the door on a marriage Luka Nightbane is engineering between Rhydian and his own daughter or face the danger alone. Both paths lead through the same darkness. At least one of them comes with protection.Inside the Revenant Syndicate, Nyra finds something she didn't expect, a purpose. Treating the wounded, operating in a world that is brutal and honest in equal measure, she discovers a version of herself her old life never had room for. She is more at peace in the underworld than she has ever been in medicine. This terrifies her.Rhydian is making an equally inconvenient discovery. There is something he cannot strategize. Cannot control. Cannot reduce to calculation. She is the one variable his entire system has no model for.