Rod Steiger delivers one of his most poignant screen performances in this little-known gem based on a novel by Graham Greene. Carl Schaffner (Steiger) is a crooked American businessman who flees to Mexico after stealing company funds. While travelling by train, Schaffner decides to evade authorities by murdering a fellow passenger and assuming his identity. The plan seems foolproof until he is forced to care for the dead man's dog. As Schaffner and his canine companion travel through the desert landscapes of Mexico, the film becomes a wrenching exploration of identity, loss, and redemption.