The 2025 Ontario Homicide Victim List is available here

Leeds County OPP officers responded to a wellness check at a home located on County Road 2 in Lansdowne on Tuesday, December 16, just before 12:30 p.m.

Upon arrival, officers discovered one individual deceased inside the residence. A postmortem examination later determined that the death was a homicide. The victim has been identified as retired Carleton University professor Katherine Graham, 78, of Leeds and the Thousand Islands Township. Graham was a retired Carleton University professor. 

Following the investigation, a 43-year-old woman from the same township was arrested on Wednesday, December 17, and has been charged with first-degree murder. The accused remains in custody, with a bail hearing scheduled for Thursday, December 18. According to reports, the accused is the victim’s daughter who is also named Katherine Graham.

The investigation is being led by the Leeds County OPP Crime Unit under the direction of the OPP Criminal Investigation Branch, with support from OPP Forensic Identification Services, as well as the Office of the Chief Coroner and the Forensic Pathology Service.

Police are asking anyone with information related to this case to contact the Leeds County OPP at 1-888-310-1122.