Or make that seven, as he recently killed his cellmate in B.C. and is now incarcerated in Ste. Anne des Plaines prison, Canada's maximum-est prison, where Mom Boucher is locked up and Clifford Olson called home.
The obvious question, which seems to have gone unanswered and perhaps even unasked, is: who else did he kill?
According to one site, McGray has offered to reveal who his other victims were in exchange for special favours.
Presumably the authorities aren't willing to negotiate any such terms.
Or else they simply don't believe that he killed others.
But perhaps it might be time to get him to talk, in order to help close some unsolved homicides here and elsewhere.
McGray's local crimes consist of killing two gay men he picked up while on a pass from a federal penitentiary in the Spring of 1991.
McGray, who is not gay, rolled into town and figured he'd have a couple of easy kills. He hooked up with Robert Assaly, who was a 59-year-old retired schoolteacher working as a bartender in the Gay Village.
Assaly's brother Rudy later said that he never knew his brother was gay and had a hard time believing it.
Assaly brought McGray back to his Nuns' Island condo. The two fell asleep until McGray fell asleep on the couch. McGray woke earlyy and threatened Assaly with a knife. Assaly laughed at him. McGray smashed him on the head with a lamp and then stabbed him 16 times.
On the same weekend McGray returned to the villager and got picked up by Gaetan Ethier, an unemployed salesman. They went to Ethier's small place on St. Andre and they watched hockey and drank wine in the small apartment. McGray dozed off after turning down an invitation for sex. He awoke at 6 a.m. and attacked Ethier with a knife an a beer bottle.
He was only tied to the two murders almost a decade later, after he killed Joan Hicks, 48 and her daughter Nina, 11 in Moncton.