She starts by noting down what she knows about Jacob Marcus in her diary, and concludes that the Alma in the book was real and proceeds to find her. She struggles in her search for Alma Mereminski, but succeeds when she realizes that Alma could have married and finds her under the name of Moritz. She is disappointed to hear that Alma has been dead for five years. However, she finds out that Isaac Moritz is the first of Alma's sons and a famous writer. When she starts reading his bestselling book, she finds that the main character's name is Jacob Marcus and realizes that Isaac Moritz had hired her mother to translate the book. Isaac is dead, however, which explains why his letters had stopped coming to their home. To be sure about her suspicions, Alma leaves a note on Isaac’s door asking who the writer of the novel is.

In the meanwhile, Bird finds Alma’s diary and misinterprets the names Alma Mereminski and Alma Moritz as being his sister’s real names, and believes they had different fathers. Isaac’s brother calls Alma, after reading the note and the original manuscript of the book, to tell her that Gursky is the real author, but Bird answers the telephone and it confuses him even further. He now suspects that Leopold Gursky is Alma's real father. To cleanse his sin of bragging and to regain the status as one of the chosen ones, he decides to set up a meeting with Alma and Gursky, thus doing a good deed without anybody knowing except God.

When the two receive the letter regarding their meeting, both are confused: Alma tries to discover which of the people she met during her searches could have sent her the note, while Leo comes to believe it was Alma who sent him the note, despite her being dead.

Leo settles himself on a park bench, waiting a long while for Alma to appear. He ponders his life, key moments from his past, the loss of his love, and what it means to be human. He imagines that he will die while he is waiting there, his own death and mortality being one of his preoccupations in the novel. When Alma finally appears, he and she are both confused, although at first Leo believes that she is his Alma from the past and that she is really just in his imagination. After he realizes that she doesn't look like his Alma, and he gets confirmation from a man walking by that the Alma who is there is actually real, Leo talks to her briefly about Bruno and Isaac, while Alma starts piecing together the puzzle of who Leo is. When Alma asks him if he ever loved a girl named Alma Mereminski, the old man finally feels a sense of transcendence in being recognized at long last, and instead of being able to respond to Alma's questions with words, he keeps tapping his fingers twice against her. She puts her head on his shoulder and hugs him, and he is finally able to speak again, saying her name three times and giving her her own feeling of transcendence at finally being recognized, too.

(Some readers believe that Leo has a heart attack and dies at this point, possibly because of Leo's earlier assumption that he is about to die, and also because he says during this meeting with Alma, "I felt my heart surge. I thought: I've lived this long. Please. A little longer won't kill me." A more compelling case can be made that the novel, for all its poignancy, simply ends with this mutually transcendent moment for these two characters.)

The last chapter is entitled "The Death of Leopold Gursky" and is identical with the last chapter of the book inside a book "The History of Love", both being the self-written obituary of Leopold Gursky. By ending the novel this way, Krauss is richly alluding to earlier parts of the novel and to her theme of how words keep people alive for us, indeed, make people in danger of becoming invisible, visible. Zvi Litvinoff carried Leo's self-written obit in his pocket for years, as a talisman guarding against Leo's death. Litvinoff, when preparing "History of Love" for publication, insists that his editor include the Leo Gursky obit at the end, his way of ensuring that Leo will continue to "live" in the hearts of all readers of the book. And finally, Nicole Krauss includes the same obit at the end of her novel, as a way of urging all readers to keep this Leo, and all Leos, alive.