When science meets the supernatural, reality unravels.Dr. Evangeline Cross is a brilliant neurosurgeon—rational, skeptical, and grounded in logic. But when the estranged quadruplet siblings who once saved her life are accused of assassinating a top-level spy, her world is upended. Cassius, Lucien, Selene, and Xander are no ordinary suspects—they possess golden eyes that gleam in the dark, an uncanny sensitivity to silver, and a secret that defies biology: they are not simply werewolves, but vessels of an ancient and volatile power.Haunted by cryptic visions and pursued by The Veil—a secretive cult that bends world events through demonic manipulation—Evangeline is forced to confront the impossible. The deeper she digs, the stranger the truth becomes. Clues buried within a forgotten opera and encoded in melodies only Xander can sing begin to unravel a sorcerous legacy long thought lost.With Elias Vaughn, a ruthless prosecutor driven by a dark vendetta, closing in, Evangeline must race against time to decode an ancient musical cipher, expose a murderer cloaked in living shadow, and shatter the lies that have held history hostage.To save the siblings, she must abandon everything she believes—and embrace a reality where magic, music, and monsters intertwine.