The author explores the unique and intense link between Vincent van Gogh and his brother Theo as illustrated in two biographical films: Vincent and Theo by Robert Altman and At Eternity's Gate by Julian Schnabel. Starting from Vincent's condition as a replacement son, the author traces some key moments of the fraternal link between Vincent and Theo, focusing his analysis on certain elements such as the idealisation of the fraternal couple, identification dynamics, and the concept of the double. These elements will lead to some concluding reflections on the fraternal in psychoanalysis.