Every Thursday for three years, Signora Giulia takes the train to Milan to visit her daughter. But one Thursday she simply disappears. And the case is left in your hands. You're a born detective, but you have so many unanswered questions - how can a young, beautiful high society woman just vanish into thin air? Why does her husband - a prominent criminal lawyer and much older man - know nothing about it? And who was she really visiting during those trips to Milan? For Detective Sciancalepre, the mystery is darker and more tangled than he imagined. Shadows are lurking in the grounds behind Giulia's house. Incriminating letters are exchanging hands. And no one is who they seem. Every twist and turn takes us closer to Giulia - and further from the truth...