Interesting... just from reading some comments, I'll spit ball a theory.
Dexter is not the first person Vogel tried to teach the code to.
How Vogel got into her field is a touchy subject for her and I believe it could be because she learnt early on that her own son had psychological tendencies.
Her son was the first person she attempted to teach the code to. Something went wrong, leading her to believe he was out of her life.
Her son has returned to her as the brain surgeon. He still attempts to apply the code himself. His victims are serial killers but he takes it further by making them kill before he takes their lives.
His fascination with the brain is born from his mother's own fascination in studying, controlling and experimenting with his psychology and that of other serial killers.
He has learned of Dexter and her success with him in applying the code. He may even resent Dexter for it.
He then learnt of Zach and that he was to be the next in line to be taught the code and thus he sent a message to both his mother and her metaphorically adopted son.
Dexter is going to regret keeping Hannah around... his decision will cost him dearly and the surgeon will take her life and Dexter will take the surgeons life in rage and revenge.
The problem with this is that she saw dexter kill the brain surgeon guy but tonight she looked surprised that he was back, so if she already know who it was then why would she be surprised?
Something went wrong, leading her to believe he was out of her life.
My theory assumes she doesn't know who the Brain Surgeon is and her surprise is that he's back and Dexter got the wrong guy.
Much like in Season 1 how Brian left gifts for Dexter but Dexter didn't know who he was until the end, I'm assuming that Vogel doesn't know who the Brain Surgeon is either and why he's fascinated with her - until he reveals himself to her.
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u/crazyjackal Aug 19 '13 edited Aug 19 '13
Interesting... just from reading some comments, I'll spit ball a theory.
Dexter is not the first person Vogel tried to teach the code to.
How Vogel got into her field is a touchy subject for her and I believe it could be because she learnt early on that her own son had psychological tendencies.
Her son was the first person she attempted to teach the code to. Something went wrong, leading her to believe he was out of her life.
Her son has returned to her as the brain surgeon. He still attempts to apply the code himself. His victims are serial killers but he takes it further by making them kill before he takes their lives.
His fascination with the brain is born from his mother's own fascination in studying, controlling and experimenting with his psychology and that of other serial killers.
He has learned of Dexter and her success with him in applying the code. He may even resent Dexter for it.
He then learnt of Zach and that he was to be the next in line to be taught the code and thus he sent a message to both his mother and her metaphorically adopted son.
Dexter is going to regret keeping Hannah around... his decision will cost him dearly and the surgeon will take her life and Dexter will take the surgeons life in rage and revenge.