left a deep psychological scar and, now separated from Archie Christie and in need of funds, she turned back to writing. The story did not come easily to her and she referred to this novel in her autobiography stating that she "always hated it". Her biography recounts how the total number of words in the book were carefully tallied up, showing what an ordeal Christie found it to be. It later had an effect on her in the midst of wartime when, nervous that at some future point she might be in need of funds and need a fallback, she wrote Sleeping Murder and locked it securely in a bank vault for future publication. Curtain was written at the same time and similarly locked away, but publication of this latter book would not be possible until the end of her writing career, as it recounts the death of Poirot. The Mystery of the Blue Train was first serialised in the London evening newspaper The Star in thirty-eight un-illustrated instalments from Wednesday 1 February to Thursday 15 March 1928. The entire first two chapters were omitted from the serialisation and it therefore contained only thirty-four chapters. There were slight amendments to the text, either to make sense of the openings of an instalment (e.g. changing "She then..." to "Katherine then..."), or omitting small sentences or words, especially in the opening instalment where several paragraphs were omitted. A reference to the continental Daily Mail at the start of chapter six (chapter eight in the book) was changed to "the newspaper" to avoid mentioning a competitor to The Star. Three chapters were given different names: chapter nine (eleven in the book) was called Something Good instead of Murder, chapter twenty-six (twenty-eight in the book) was called Poirot hedges instead of Poirot plays the Squirrel and chapter twenty-eight (chapter thirty in the book) was called Katherine's letters instead of Miss Viner gives judgement. The final chapter, called By the Sea in the book, was unnamed in the serialisation. This is the only major work by Agatha Christie in which the UK first edition carries no copyright or publication date. Book dedication Christie's dedication in the book reads: "To the two distinguished members of the O.F.D. – Carlotta and Peter". This dedication is a direct reference to the events of 1926 which included the death of Christie's mother on 5 April, the breakdown of her