Agatha Christie

Towards Zero is a work of detective fiction by Agatha Christie first published in the US by Dodd, Mead and Company in June 1944, selling for $2.00. and in the UK by the Collins Crime Club in July of the same year The book is the last to feature her recurring character of Superintendent Battle.

Destination Unknown is a work of detective fiction by Agatha Christie and first published in the UK by the Collins Crime Club on 1 November 1954 and in US by Dodd, Mead and Company in 1955 under the title of So Many Steps to Death. The UK edition retailed at ten shillings and sixpence and the US edition at $2.75.