The Grief Keeper is a science fiction novel for young adults written by Alexandra Villasante. The book was published in 2019 by Putnam and received the Lambda Literary Award in the following year. The book tells the story of two sisters from El Salvador, Marisol and Gabi, who flee from an immigrant detention center on the American border, with the older sister, Marisol, being forced to participate in an experimental procedure or risk being deported.