Philoxenia Tetralogy-The Hummingbirds and The Sapphire.

Emma "Sapphire" Steyn is not a myth. She's the girl who learned lockpicks before lullabies, raised by three mentors who taught her war, diplomacy, and seduction-tools, not destinies. As a Hummingbird, she moves where the law won't: extracting the endangered, sabotaging the powerful, and balancing a private ledger one green mark at a time.A letter from a dead girl, a safe room in Hillbrow, exams taken on rooftops at 3 a.m.-Sapphire's origin is written in drills and love that never says its name. Her fieldwork is global and surgical: Bangkok handoffs, Moscow corridors, a Russian academy where she teaches girls that seduction is direction-reorienting a will without showing the turn.Then St. Petersburg rewrites the rules. A Fabergé forgery, a freighter named for a goddess, and icons hiding ingots expose a pipeline of stolen art and laundered power. The nameless Boss is a rumor with a balance sheet-until he becomes the point. When a photographer with wolf-blue eyes turns a city into a promise and a single shot turns it into an oath, grief hardens into geometry. The hunt is on.Gritty and propulsive yet fiercely humane, THE HUMMINGBIRDS AND THE SAPPHIRE is an international espionage thriller about chosen family, the cost of mercy, and a woman who refuses to be anyone's mask. For fans of Red Sparrow, The Night Manager, and the lyrical ferocity of Megan Abbott.