Sir Bernard Spilsbury conducted Jouannet's autopsy at the Paddington Mortuary on 14 February. Via examining the spillage of blood from Jouannet's wounds, Spilsbury was able to determine the decedent had been strangled to the point of death before her murderer had first mutilated her breast and left thigh as she died. All other wounds had been inflicted after death. In reference to the nature of the wounds to the victim's body and the locations they had been inflicted, Spilsbury noted the murderer had exercised a degree of calculated restraint when disfiguring his victim above the navel, but that he had worked himself into an evident frenzy when mutilating her genitalia and thigh.