London. 22nd December. Chief Inspector Brett Nightingale and Sergeant Beddoes have been called to a gloomy flat off Islington High Street. An elderly woman lies dead on the bed, and her trunk has been looted. The woman is Princess Olga Karukhin, an emigrant of Civil War Russia and her trunk is missing its glittering treasure... Out in the dizzying neon and festive chaos of the capital a colorful cast of suspects abound: the downtrodden grandson, a...