There is no lack of cases involving arsonists setting fire to buildings and vehicles to defraud their insurance companies. The 2015 Insurance Fraud Hall of Shame includes two shocking arsons. Fortunately, many such crimes are uncovered by well-trained fire investigators. Arson still is happening just as it was decades ago, and fire-starting methods haven’t changed dramatically. What has changed are the professionals who investigate arsons. Our scientific knowledge of fire has grown substantially, and investigative techniques have improved. Professionalism overall has grown remarkably.