The Lost: A Search for Six of Six Million

The Lost: A Search for Six of Six Million (ISBN 978-0-06-054297-9) is a non-fiction memoir by Daniel Mendelsohn, published in September 2006, which has received critical acclaim as a new perspective on Holocaust remembrance. It was awarded the National Book Critics Circle Award, the National Jewish Book Award, and the Prix Médicis in France, and it was shortlisted for the Duff Cooper History Prize in the UK. An international bestseller, The Lost has been translated into several languages, including French, German, Dutch, Italian, Spanish, Portuguese, Greek, German, Romanian, Turkish, Norwegian, and Hebrew.

The Lost tells of Mendelsohn's world-wide travels in search of details about the lives and fates of a maternal great-uncle, Samuel (Shmiel) Jäger, his wife, Ester, and their four daughters who lived in Bolechow and were killed during the Nazi occupation. According to the author, "My book is about trying to find out exactly, specifically, what happened to those people."

In writing The Lost, Mendelsohn notes a debt to Marcel Proust, telling Salon.com, "Clearly, the book is in some large sense about the possibility of recovering the past, so it's automatically a Proustian book."