Sparkling Cyanide is a detective novel by Agatha Christie, 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 novel features the recurring character of Colonel Race for his last appearance to solve the mysterious deaths of a married couple, exactly one year apart. The plot of this novel expands the plot of a short story, "Yellow Iris".
