After years away, Ivan returns to Moscow searching for answers about his mother, Katya—a mysterious woman who disappeared when he was just a boy. His journey leads him to Anastasia, Katya’s twin sister, and into the heart of a family history shaped by love, betrayal, Cold War secrets, and painful truths long buried. Spanning from the icy plains of Mongolia and Soviet Russia to the warm coast of Spain, Sea Eyes tells the unforgettable story of two sisters bound by the past—and the choices that changed everything. With emotional depth and page-turning suspense, Manuel Sánchez delivers a powerful novel about identity, memory, and the silent weight of guilt. Sometimes the answers we search for aren’t in the past—but in the eyes of those still with us.