"Stefan still hasn’t fully recovered from his brush with death and the evil that was infused in him. He has moments where he becomes a completely different person, one that has no moral judgments, but just acts on pure animalistic instinct. When this inner-demon comes out of him, there is no controlling it. He’s lucky if he can snap back in time before he does damage, particularly when Elena’s around and exposed to this part of him. Meanwhile, Jeremy is still having trouble accepting Vicki’s death. It has been ruled as an overdose, but he can’t let go of the fact that she was buried. Someone had to have buried her and Jeremy suspects this person also murdered her. He suspects that Elena might know something that she isn’t telling him and he finds out just what this is.
It really is for the best that Stefan got kidnapped, tortured, and had the evil force fed to him; it makes him a far more wildly interesting character. He has been developed and made a bit more dynamic as the series has gone on. Still, this pulls him in an extremely intriguing direction. As Damon notes of the drunken dancing Stefan, “Have I entered an alternate universe where Stefan is fun?” For the past century, Stefan has been able to suppress his urges and keep everything locked in. Even when it has been difficult, he always stayed in control. That has changed now; his urges are more powerful than he is. It has finally got to the point where he can’t deny what he is, the hunger has changed him. He even tries Damon’s method of drinking away his problems with alcohol, but of course that does nothing. Stefan begins to fear being around Elena.
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