The Three Musketeers (French: Les Trois Mousquetaires) is a novel by Alexandre Dumas, which recounts the adventures of a young man named d'Artagnan after he leaves home to travel to Paris, to join the Musketeers of the Guard. D'Artagnan is not one of the musketeers of the title; those are his friends Athos, Porthos and Aramis, inseparable friends who live by the motto "all for one, one for all" ("tous pour un, un pour tous").

The Thirty-Nine Steps is an adventure novel by the Scottish author John Buchan. It first appeared as a serial in Blackwood's Magazine in August and September 1915 before being published in book form in October that year by William Blackwood and Sons, Edinburgh.[1] It is the first of five novels featuring Richard Hannay, an all-action hero with a stiff upper lip and a miraculous knack for getting himself out of sticky situations. The novel formed the basis for a number of film adaptations, notably: Alfred Hitchcock's 1935 version; a 1959 colour remake; a 1978 version which is perhaps most faithful to the novel; and a 2008 version for British television.