Behind Celia’s quiet smile lies Scylla, an ancient siren who must complete a brutal rite to preserve her bloodline: her husband must die on the wedding night. Julian, a kind-looking medical student, seems like easy prey. Yet in a remote Welsh village, the trap snaps shut on her instead. Julian is the real monster—a merciless kingpin running an underground surrogacy operation—and he moves to drug Celia and auction her to the highest bidder as a premium incubator for £3 million.