WARNING: This story contains graphic details of violence. 

More than one in three people accused of intimate-partner homicide demonstrated at least one warning sign prior to the killing, according to a CBC News investigation.

The finding is one of dozens from Deadly Relationships, a sweeping, 16-month CBC News analysis of intimate-partner homicides across Canada between January 2015 and June 2020. 

CBC’s investigative team collected nearly 50 data points on close to 400 cases over that timeframe, including the gender and ethnicity of victims and accused, whether the victim was protected by a court order when they were killed and the criminal history