One, Two, Buckle My Shoe is a work of detective fiction by Agatha Christie and first published in the United Kingdom by the Collins Crime Club in November 1940 and in US by Dodd, Mead and Company in February 1941 under the title of The Patriotic Murders. A paperback edition in the US by Dell books in 1953 changed the title again to An Overdose of Death. The UK edition retailed at seven shillings and sixpence (7/6) while the United States edition retailed at $2.00. It is one of several of Christie's crime fiction novels to feature both the Belgian detective Hercule Poirot, and Chief Inspector Japp. This is Japp's final novel appearance