Harper's Island-- anyone else watching?

[CutiePie2000]

Does anyone have any theories on who the killer might be? Some people think that it's Sherriff Charlie Mills (wow..the Chief of Police is named Charlie...how very "TWILIGHT" of them...LOL), because when he chased John Wakefield off the cliff, the killings stopped. However, I don't believe that Wakefield's body was recovered (need to verify if this tombstone is just an empty grave or not), so maybe Mills basically created an "alibi" in Wakefield.

Other forums have suggested that it's Abby Mills. But if it's something stupid like a split personality / mental illness (a la "The Uninvited"), I will be very annoyed. What a rip off that would be.

I'm starting to wonder if it is the jilted boyfriend, Jimmy Mance? I don't think it's either of those 2 weirdos, J.D. nor Shane.
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Okay, is anyone watching the "Harper's Globe" webisodes? In the episode called "The Key" there appears to be a fraternity connection with "Kappa Delta Delta". It looks like two guys were kidnapped for a hazing / intitiation ritual. Hmm....very interesting. I wonder if there is a weird "secret society cult" angle to the whole Harper's Island show? Hmmmmmm...............