No, there is currently no sequel to Salt to the Sea by Ruta Sepetys. The novel, which tells a heart-wrenching story about the tragedies of war and the plight of refugees during World War II, stands alone as a powerful narrative. While Sepetys has written other acclaimed books that explore different historical events and characters, Salt to the Sea does not have an official follow-up. The story is complete in itself, capturing the essence of its characters and their experiences during a pivotal moment in history.