Death in the Clouds

Death in the Clouds was a murder mystery novel by Agatha Christie which was first published in 1935. It was one of Christie's Hercule Poirot novels. Part of the novel's plot (involving a wasp) may have been subconsciously influenced by an adventure Christie shared with the Tenth Doctor and Donna Noble. It was 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. (TV: The Unicorn and the Wasp)