David Buller was a 50-year-old Toronto artist and longtime University of Toronto fine arts professor who was found stabbed to death in his campus office. Police list the homicide date as January 19, 2001, though family and investigators say the fatal attack most likely occurred the afternoon of January 18. Buller had been seen near the Visual Studies building around 1 p.m., was scheduled to teach later that day and never appeared for his class.

Investigators say Buller was apparently seated at his computer when someone entered and stabbed him repeatedly in the torso; he fell from his chair and pulled the computer’s power cord loose, and his office door was left closed so his body remained undiscovered until a caretaker found him at about 6:58 a.m. the next morning. Detectives reported little obvious disturbance, no murder weapon recovered, no usable DNA and no security footage; the office’s secluded location led them to suspect the killer likely knew where Buller worked and may have known him personally. A computer-generated drawing created around the time of the killing, described in later accounts as depicting two men, was investigated but produced no established motive.

Police eventually offered a $50,000 reward, and the homicide unit continues to list the case as unsolved. Did anyone who knew Buller or worked in that part of the Visual Studies building remember anything unusual that afternoon in January 2001?