Yeah, these facts have been mentioned here as many times as in every way, but you might have noticed how skeletal Harvey was in the episode. I mean, he's always been a "thin man", but he was emaciated.

Barbara Colby and fellow actor James Kiernan were walking to their parked car after teaching an acting class in Los Angeles, when they were gunned down by two men for no apparent reason. The killers were never caught, and the crime remains unsolved.

Tragic.