 The police in Calgary were in possession of a copy of the photograph recovered from Archambaut's apartment and, as Boden resembled the man in the picture, they held him for suspicion in murdering Porteous.Police then turned their attention to the marks on the victim's breasts.The police contacted Gordon Swann, a local orthodontist, to help prove that the marks on Porteous' breasts and neck were Boden's bite marks, with the intent to verify them as having been left by Boden.