What would be the connection between Don Quixote, The Great Gatsby and all the stories of Sherlock Holmes? Is there any common element that may be reused in these narratives as a whole? Undoubtedly there are more divergences than similarities. In fact, all of them were written in different ages, cultures, styles and literary genres. Whereas the first Sherlock Holmes ' apparition was in 1886 in United Kingdom, The Great Gatsby is a 1925 novel written by an American and the Spanish Don Quixote belongs to the XVI century. On the other hand their similarities connects them closer. It refers to the popular "literary pairs" or "fictional duos". The comic foil, the earnest aide, sidekick following the "hero" is a model of character that has been widely repeated in literature over the years. Don Quixote and Sancho Panza, Gatsby and Nick, and Holmes and Watson tackle all certain adventures or issues with the inseparable treasured companion. We can even find many others literary duos such as Huckleberry Finn and Tom Sawyer or Dr Frankenstein and The Monster. Focusing on Conan Doyle 's characters, the main aim of this section is to illuminate the psychological bond between Holmes and Watson. Even thought they seem to be opposites, they complement and depend on each other. But how it can be possible?
As It was explained before, fictional duos are a very recurrent pattern in literature. In Doyle 's stories, Watson seems to be more than just a mere character or companion. He is the firmly