Books
* Manhunt: The Twelve Day Search for Lincoln's Killer (2005)
* The Ghost in the Tower: The Tragedy of the SS Pulaski and the Birth of the FBI (2010)
* The Smithsonian Book of the Dead (2013)
* The House on the Hill (2015)
* The Pope's Confessor (2017)
* Morgue: A Life in Death (2018)
* The Lost Will (2019)
* The Cemetery of Forgotten Books: A Novel (2021)
Short Stories
* "The Dead Man's Diary" (2012)
* "The Ghost of the USS Hornet" (2013)
* "The Curse of the Pharaoh's Tomb" (2014)
* "The Secret of the Lost City" (2015)
* "The Monster in the Mist" (2016)
* "The House of Shadows" (2017)
* "The Last Flight of the Titanic" (2018)
* "The Secret of the Ancient Library" (2019)
Additionally, Dixon has written articles for various magazines and newspapers, including The Washington Post, The New York Times, The Wall Street Journal, and The Atlantic Monthly.