In the early 20^th century, criminologist Edward Oscar Heinrich used forensic science to expose criminals from trace evidence using techniques established by himself and progressive law enforcement colleagues. He also documented everything in his professional life no matter how small, a collection his son donated to the library of Heinrich’s employer, the University of California at Berkeley. Dawson’s determination persuaded archivist Lara Michels, who took on the monumental task of cataloging it all. I was fortunate to receive this well-researched and well-written biography of a brilliant founder of forensic strategies and forensic science itself from the publisher G P Putnam’s Sons through NetGalley.