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In the novel Ordeal by Innocence, Hayes Bentley is the name of an expedition to the Antarctic. Dr Arthur Calgary, a geophysicist, left for Antarctica as a member of this expedition shortly after the time of the murder of Rachel Argyle. As such he was could not be found and was not available to give an alibi to Jacko Argyle, causing him ultimately to be convicted. Hayes Bentley could be the name of one person or two. Indeed, there are publications about Antarctica published by Bentley and Hayes but it is not clear if Christie was referencing these individuals. 1957 was International Geophysical Year which saw major developments in Antarctic exploration. These real world events would have been fresh in the minds of Christie and her readers, the novel being published in 1958.

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