The team heads to Kensington Market where a grocery store owner, Idaris John, is slashed several times, he being a beloved figure in the neighborhood. The wounds end up being non-life threatening. Psych Crimes and Crises is involved because Idaris suffers from a rare neurological condition called, in layman terms, face blindness, where he cannot recognize faces, and as such he will not be able to identify his attacker. Upon further discussion with Idaris' doctor, Dr. Paul Bruckman, they learn that Idaris is also in the early stages of Alzheimer's despite being only in his early forties. Despite no accurate eyewitness accounts beyond the attacker yelling "I know you" - leading to Aidan believing the attack was personally motivated - and being a black man, the team is able to quickly identify the attacker as Benjamin Omari, a refugee from the Congo. In checking his refugee file, they find a photograph of Benjamin as a young teen in the Congo with a man looking like Idaris, but who is ...