Edited by Mathew Prichard, this features letters and photos from Christie's 1922 10 month voyage around the British Empire with her husband. Unpublished for 90 years, it sees her visit South Africa, Australia, New Zealand, Canada and America as part of the British trade mission for the 1924 Empire Exhibition.

Agatha Christie was born in Torquay in 1890 and became, quite simply, the best-selling novelist in history. Her books have sold over a billion copies in the English language and another billion in over 100 foreign languages. She is the author of 80 crime novels and short story collections, 19 plays, and six novels under the name of Mary Westmacott. Mathew Prichard is Agatha Christie's grandson and Chairman of Agatha Christie Limited, which runs her business affairs. This is the first time he has been directly involved in the writing of a book about his grandmother.

Agatha Christie was born in Torquay in 1890 and became, quite simply, the best-selling novelist in history. Her books have sold over a billion copies in the English language and another billion in over 100 foreign languages. She is the author of 80 crime novels and short story collections, 19 plays, and six novels under the name of Mary Westmacott. Mathew Prichard is Agatha Christie's grandson and Chairman of Agatha Christie Limited, which runs her business affairs. This is the first time he has been directly involved in the writing of a book about his grandmother.