Sgt. Hank Idsinga, a homicide detective with the Toronto Police Service who is managing the current investigation, disputed allegations of neglect or bias.
“We don’t simply show up, take a missing-persons report, throw it on a pile and do nothing with it,” he said, noting that Project Prism yielded results in part because Mr. Kinsman’s disappearance was reported right way. “That gave us good ability to jump-start the investigation,” he said.
Mr. McArthur, who attended a Gay Fathers of Toronto support group and worked as a mall Santa, had some record of violence. In 2003 he was convicted of assaulting a man with a metal pipe, and avoided prison by agreeing to a number of conditions, including that he avoid male prostitutes and the Gay Village.
Yet Mr. McArthur was there constantly, those who knew him said.
Jorge Da Costa, 56, a community activist, said he used to see Mr. McArthur at bars and chatted with him on dating sites. “He asked if I wanted to get high and if I liked getting tied up with chains and straps,” said Mr. Da Costa, who declined the invitation.
During a vigil last week at the predominantly gay Metropolitan Community Church, mourners lit candles to honor each of the victims.
“They all vanished without a trace,” said Todd Shearing, 52, a friend of Mr. Kinsman who joined search parties after he went missing. “But Andrew was the catalyst that made the community shout very loud.”