You thought a GPS tracker would provide answers - but it plunges you into dark abysses. Digital, emotional, and highly sophisticated: This psychological thriller is domestic noir at its finest from bestselling author Ursula Poznanski. A gripping tech thriller about an old house, a woman with a disability, and a digital cat-and-mouse game between truth and madness. Trapped in her own home: Young interior designer Viola Decker loses a leg in an accident, and suddenly her world is full of obstacles. Although her husband Adam lovingly cares for her, he doesn't seem to be in any hurry to make their remote old house accessible. Viola is literally stuck on the ground floor, alone with a taciturn caregiver who constantly makes her feel like she's being watched. And important things keep disappearing from Viola's reach. To avoid having to search for them for long, she equips them with tiny GPS trackers. When Adam's behavior begins to change and he starts coming home late more and more often, she secretly begins tracking him too, and soon discovers disturbing patterns. He's obviously lying to her about his daily routine—and he's not the only one. Why? With each passing day and each lie, a terrible suspicion grows in Viola's mind... A psychological thriller with a gripping Hitchcockian plot, a lifelike heroine, and sophisticated digital twists. Like no other thriller writer, Ursula Poznanski consistently uses new technological advancements to create a spine-chilling ending. Her heroine, Viola, is trapped in a claustrophobic atmosphere. But is she simply becoming paranoid—or is she in mortal danger? Also discover Ursula Poznanski's thriller bestseller 'The Castle' about a deadly escape game with an AI. biography Ursula Poznanski, born in Vienna, studied a wide range of subjects at the university there before, after ten years, giving up hope of graduating and facing the realities of life as a medical journalist. After the birth of her son, she began writing children's books. She lives with her family in the south of Vienna. New product