A close Jewish friend of Bruno, shared a profound bond with Bruno's father, Otto, who helped his family escape Germany.

Bruno remained unaware of Eli's fate until his return from the Siberian prison camp, adding a layer of emotional complexity to Bruno’s journey. Eli, along with his family, is slated to play a role in the unfolding narrative of a future novel "The Surgeon and the Soldier", promising a continuation of their shared story and the enduring ties that transcend tumultuous times.