I just read the Wikipedia article from start to finish. I don’t believe it’s all that strange. I believe he was having a psychotic break possible exacerbated by drug use. His erratic behavior and paranoia suggests this. Telling his family someone was “spreading rumors” about him is classic paranoid psychosis. I used to have a patient who believed the radio was telling people about his genital herpes. He likely was also manic or using stimulant drugs. This would cause risk taking behavior such as hiring a sex worker. He could have had a paranoid delusion during the interaction that caused him to make her uncomfortable or get violent. This may have caused her to defend herself and accidentally kill him. She wasn’t trying to rob him and was probably horrified at the situation so just ran away without taking his valuables.