Death in the Clouds

Death in the Clouds (also published under the variant title Death in the Air) was a murder mystery novel by Agatha Christie which was first published in 1935. One of Christie's Hercule Poirot novels, part of the novel's plot (involving a wasp) may gave been subconsciously influenced by an adventure she shared with the Doctor and Donna Noble. It is one of a number of Christie's works to be preserved through human history, with an edition owned by the Doctor carrying a publishing date of the year 5 Billion. (DW: The Unicorn and the Wasp.