Sparkling Cyanide is a work of detective fiction by Agatha Christie and first published in the US by Dodd, Mead and Company in February 1945 under the title of '''''Remembered Death and in UK by the Collins Crime Club in the December of the same year under Christie's original title.
The book features the last recorded appearance of the recurring supporting character and some time detective Colonel Race. The book is also a reworking of an earlier short story entitled Yellow Iris which had previously been published in issue 559 of the [[Strand Magazine]] in July 1937 and in book form in [[The Regatta Mystery and Other Stories]] in the US in 1939. It was published in the UK in [[Problem at Pollensa Bay]] in 1991. The full-length novel omits the character of Poirot.
The novel uses the basics of the short story, including the method of the poisoning, but changes the identity of the culprit(s).