Ben was killed twice, in two different ways, a little like Tim Kono. They both were poisoned first, before a more brutal method was used to make sure they were dead.
Back in season 1 there were many theories of two killers but it ended up only being one. Could there be two different killers this season?
Also, I think that if its just one killer, it has to be someone from the Arconia, if its two, I think one of them lives there. Also if its one killer, its a man, if its two killers one of them is a man. I think this because Charles said that another female killer is so done.
Howard is still high on my list. He was onto Jan, and I think he left the note on her door. Also, we have never gotten to know who poisoned Winnie, and since Amy Schumer brought it up in season 2 I'm sure Jan didn't do it. But Howard might have. Howard faints at the sight of blood, so he might be the poisoner.












