Yeah, but why? I liked it better when I thought Ki was just a super-intelligent deranged individual on his own. I didn't need for another character to come in and somehow push him over the edge during a 5 minute psychology session in a 5 minute flashback. Then she was introduced in the current timeline only to play no role at all and die. Makes zero sense to me.
And was the whole turd cult taking credit for the zodiac killer just made up? I understand why they need to draw parallels with Manson and other real life psychos like the cool aide guy, but, wtf was that turd cult all about and what purpose did it serve?