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In page Parker Pyne Investigates:

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"The Gate of Baghdad" twice quotes the poem "Gates of Damascus" by James Elroy Flecker. As Pyne stands in Damascus he likens the Baghdad Gate that they will go through as the "Gate of Death" however whereas Flecker's poem talks of four gates in the city, in reality there are eight in the ancient walls and none of them is called the Baghdad gate. Christie also referenced the poem in naming her final written work, Postern of Fate (1973).[citation needed]