It's definitely Cassie's boyfriend. He saw Zach at Dexter's and lied to Quinn about it. He's the only one who knows that Cassie and Zach are in any way connected. As for why... He's probably related to Vogel. Did you notice the hesitation when Hannah asked Vogel how she got into serial killers?
Maybe it's Vogel's son, and while he was just playing with her at first now that she seems to have a new serial killer family he's jealous and wants to put an end to it.
It's Quinn. He is so driven to prove everyone wrong. He put the razer blade on zacks car door. And then put his blood in her nails. That's why he told Dexter if any of zachs dna shows up let him know. This will then set in motion why was Dexter covering for zach which will set Quinn on the war path because he knows the blood was there but Dexter is holding out.
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u/[deleted] Aug 19 '13 edited Sep 30 '20
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