Sparkling cyanide

Sparkling Cyanide is a work of detective fiction by British writer Agatha Christie, first published in the US by Dodd, Mead and Company in February 1945 under the title Remembered Death and in the UK by the Collins Crime Club in December the same year under Christie's original title. The US edition retailed at $2.00 and the UK edition at eight shillings and sixpence (8/6). The novel features the last appearance of the recurring character Colonel Race, 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".