A rather lucrative courier job sends Georgiana overseas - in search of Henry's father. Following an illuminating trip to the British Embassy, they rendezvous with the man who sent the mysterious telegram, and find themselves worse off than they were before.At a dead end, Auntie Sheba comes up trumps with tickets to Romania on the fabulous Europa Vitesse, but their impromptu holiday turns murderous, when they realise that one of the passengers is up to no good. Is the duke's diary more significant than it appears? Whatever happened to that strange delivery? And might Crumpet be driving the train? In a carriage full of secrets, Georgiana, Henry and faithful dog Crumpet, have to find out the truth behind the people on board. A page-turning 1920s whodunnit for fans of Agatha Christie and Downton Abbey. This is the fourth book in the Mrs Mortimer Mystery series, although it can be enjoyed as a stand-alone story in its own right.