David Michael Krueger
Brockville Psychiatric Hospital
P.O. Box 1050
Brockville, Ontario K6V 5W7
Canada

Death toll 4
Peter Woodcock (born March 5, 1939) is a Canadian serial killer and child rapist who murdered three young children in Toronto, Canada in 1956 and 1957 when he was still a teenager.
Woodcock was apprehended in 1957, declared legally insane and placed in Oak Ridge, an Ontario psychiatric facility located in Penetanguishene. In 1982, he legally changed his name to David Michael Krueger. Woodcock also murdered a fellow psychiatric patient in 1991, at the medium-security hospital in Brockville, Ontario, during the first hour of his very first weekend pass. Woodcock was being supervised on the pass by Bruce Hamill, a former patient who killed an elderly Ottawa woman in 1984. Hamill was an accomplice in the Brockville murder, and both men were subsequently returned to Oak Ridge.