This article presents a philosophical analysis of editions of La otra raya del tigre (1977) by Pedro Gomez-Valderrama, a writer from Santander. This analysis was conducted based on a theoretical-methodological approach of textual criticism. Thus, it presents the development of elaborating critical editing of this novel in the first two stages of this recension, namely: fontis criticae and collatio codicum. Hence, we will present a description of the editing used in collatio codicum and an analysis of the types of variants found in said philological process.&nbsp