One, Two, Buckle My Shoe is a detective novel by Agatha Christie, first published in the UK by the Collins Crime Club in November 1940, and in the 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 book features Hercule Poirot and Chief Inspector Japp, and is Japp's final novel appearance.
