http://www.cbc.ca/news/canada/toronto/mcarthur-investigation-challenge-1.4502109
With multiple victims and no bodies, police are in 'uncharted territory' in McArthur case, says criminologist
Bruce McArthur is charged with murdering 2 men, but police believe he’s responsible for other deaths
By Kate McGillivray , CBC News Posted: Jan 25, 2018
A criminologist and former police officer says Toronto police have their work cut out for them as they push further into their investigation of Bruce McArthur, a 66-year-old man accused of murdering two men who went missing in 2017.
Neither Andrew Kinsman's nor Selim Esen's bodies have been located, and police believe McArthur is responsible for the death of others. The charges against McArthur have not been proven in court.
"Prosecuting one case without a body is problematic enough. Two, perhaps four, perhaps more? We're sort of in uncharted territory," criminologist and Western University professor Mike Arntfield told CBC Toronto.
Former Toronto homicide investigator Dave Perry told CBC Radio's Metro Morning that "serial killers are the most difficult investigations that a police service can face, that investigators can face."
"How do you recognize a serial killer?" he said. "Well, it takes several offences where the patterns start to form."
Perry, who is now the CEO of a private investigation firm, said cases like this one are extremely rare.
"We haven`t seen a case like this in quite some time," he said. "They only account for one per cent of our cases in Canada."
rbbm.Joo-Young Lee, an associate professor of sociology at the University of Toronto, agrees, pointing out that marginalized groups are also less likely to have a rapport with police.
"Serial killers target people who are easy victims, people who are in their neighbourhood, people who they may rub shoulders with at social events, and also people who are not likely to get a lot of attention from police investigations," he said.