The Flying Scotsman

The Flying Scotsman:  A luxury train and the fastest way to travel between London and Edinburgh, has become the secret escape route for a European Prince who has narrowly escaped assassination at a royal wedding—an assassination intended to prevent the finalization of a treaty vital to British interests in Europe.
Posing as a journalist, Mycroft Holmes and Paterson Guthrie, Holmes’s assistant in his adventures, board the train to protect the prince during what should have been a quick, safe trip to Scotland. Their journey is interrupted almost immediately by another try at murder.
Guthrie spots some familiar faces among his fellow passengers. He and Mycroft have tangled with Scottish laird Sir Cameron Macmillan before. Is he behind the attempted assassinations? Then there’s the beautiful and dangerous Pauline Gatspy. She’s helped Mycroft and Guthrie in the past, but that’s no guarantee that she’s on their side—England’s side—this time.
The Flying Scotsman combines the established thrills and chills of the Mycroft Holmes series with the history and high society life of Scotland’s version of the Orient Expresss.