Miles Siward and Briers Allerdale return for another thrilling Jazz Age adventure. “Silk stockings on expenses.” Miles’s aristocratic mother has information of importance to the British Government and he must escort her home from Bucharest immediately, but their plans go violently awry and Miles and Lady Siward find themselves on a train to Belgrade - where Miles’s lover is posted. Since their pursuers are looking for a man and a woman, might two women slip past them unnoticed? "Is anyone on this train who they say they are?" Briers doesn’t know whether to kiss Miles or punch him but is delighted to accompany him and his mother on their journey. All he has to do is keep an eye open for their enemies - but who exactly are they; the enormous Russian, the sinister priest, the handsome jazz pianist, or maybe the winsome young movie star? And his mother-in-law might just be the most terrifying of all! All aboard for the ride of a lifetime, with a cast of characters you'll never forget!