This work is a draft of a novel based on Lowry's visit to Mexico in 1945-46, which ended in the arrest and deportation of the author and his wife, following a confrontation with corrupt immigration authorities. Lowry's other works include ""Ultramarine"" and ""Under the Volcano"".

Although Malcolm Lowry (1909-1957) published only two novels - Ultramarine and Under the Volcano - in his lifetime, numerous other works, most of which have since been edited for publication, were in various stages of composition at his death. La Mordida, the longest and most significant of the manuscripts that have not been previously published, is a draft of a novel based on Lowry's visit to Mexico in 1945-46, which ended in the arrest and deportation of Lowry and his wife following a nightmarish run-in with corrupt immigration authorities. On its most immediate level, the title La Mordida - which means "the little bite", Mexican slang for the small bribe that officials are apt to demand in order to expedite matters - refers to the autobiographical protagonist's legal difficulties. In a larger sense, however, it also represents his inability to escape his past, to repay the fine, or debt, that he owes. The central narrative of La Mordida involves a descent into the abyss of self, culminating in the protagonist's symbolic rebirth at the book's end. Lowry planned to use this basic narrative pattern as the springboard for innumerable questions about such concerns as art, identity, the nature of existence, political issues, and alcoholism. Above all, La Mordida was to have been a metafictional work about an author who sees no point in living events if he cannot write about them, and who not only is unable to write but also suspects that he is just a character in a novel.