In 2017, Nurse Elizabeth Wettlaufer pleaded guilty to eight counts of first-degree murder, four counts of attempted murder, and two counts of aggravated assault after quitting her job in 2016 and checking herself into a psychiatric hospital where she eventually confessed.

Her crimes were committed against elderly patients placed under her care between 2007 and 2016. Most of them were perpetrated at Caressant Care nursing home in Woodstock, Ontario. She used heavy amounts of insulin to commit her crimes which usually ended in overdoses.