The Walk Me Home telephone helpline service has proved indispensable. Staffed by volunteers, it provides a reassuring voice at the end of the phone, helping to protect lone women as they walk home at night. Jules has only been working for Walk Me Home for a short time and has never had to deal with a truly life-threatening situation. But that all changes one Saturday night when Klara calls. The terrifying new psychological thriller by internationally bestselling phenomenon Sebastian Fitzek.