iMajor
MartinLouisTheKingJr
Quinn killed 2 people last year without batting an eye, he is a murderer, and this would make no sense at even for this show, for a brand new guy to come in, take out his neighbor and then kill her to frame Dexter, it has to be Quinn mad the world that he is a failure and loser getting revenge for Deb his lost love, trying to destroy the man she worships her brother who is perfect. He has motive and i can't see 60 something Vogel getting the best of healthy grown men unless she drugging them like Hannah.
So Quinn is a murderer fine. But he's not slicing brains open b. I don't think it is someone new maybe it's someone we are overlooking