Mann's fifth book, "What Remains", published in 2003, is based on the show of the same name at the Corcoran Gallery in Washington, DC. The book is broken up into four sections: Matter Lent, December 8, 2000, Antietam, and What Remains. The first section contains photographs of the remains of Eva, her greyhound, after decomposition, along with the photographs of dead and decomposing bodies at a federal forensic anthropology facility (known as the ‘body farm'). The second part details the site on her property where an armed escaped convict was killed in a shootout with police. The third part is a study of the grounds of Antietam, the site of the bloodiest single day battle in American history during the Civil War. The fourth part is a study of close-up faces of her children. Thus, this study of mortality, decay and death ends with hope and love.