Paranormal investigators Sofia and Kent move, with their twins, to their new HQ in Lule , SwedenBut their peace is shattered when their children begin waking in tears, speaking to unseen figures, and drawing spirals that glow faintly in the dark. Beneath the nursery, a hidden trapdoor leads to a ritual chamber carved in stone-its centerpiece, an empty basin etched with music and horses.Whispers return. Water runs backward. Mirrors begin to hum.When young Emma begins to sing in her sleep and Theo collapses from a scream that shatters glass, the team realizes the threat isn't bound to one country-or one mirror. Echoes stretch across oceans. A Choir of the Deep is awakening.To end it, they must descend into forgotten ruins, face false reflections, and confront ancient enemies who remember everything-including the blood they share.
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