Since they were first revealed in 1863, the casts from Pompeii which preserved the forms of the victims in their moment of death have generated huge interest. Stories of their supposed lives and deaths have proved to be persistent not just in novels and movies, but also in some academic treatments of the site. As part of the Great Pompeii Project of 2015, the Superintendency organised the restoration of 86 of the 103 casts. Estelle Lazer and her team were given the opportunity to generate CT scans and x-ray analysis. For the first time, it was possible to carry out a scientific analysis a number of the casts and the remains embedded within them. The results were unexpected. Yes, there were new insights into the victims, their lives and their deaths, but, as this lecture will show, there was also much to learn about archaeological practices at Pompeii in the late nineteenth and early twentieth centuries. A Sydney Ideas lecture co-presented with the Department of Classics and Ancient History and the Nicholson Museum at the University of Sydney