Hi! Completely understand why you made your edit. I saw a copy of the official crew list from someone working on the show, but that's an internal document, so it's not something that can be verified. Adam Fratto's involvement, at least, can be confirmed with a simple Google search...searching for "Haven" and "Adam Fratto" will turn up several links, such as this one from the Hollywood Reporter: http://www.hollywoodreporter.com/hr/content_display/television/news/e3id9b527feb78495412db608d9c3db695b.  Charles Ardai's involvement is tougher to turn up a good link for (though he's talked about it himself in numerous interviews, on his Twitter page, and in e-mails to the Hard Case Crime mailing list).  I did find this, though: http://multipleverses.com/2010/06/29/syfys-haven-set-to-premiere-july-9-interview-with-cast-plus-promo-photos/.  It contains a transcript of a conference call held recently by the show's two creators and two main stars, in which the creators say this, "Charles Cartwright...who is the publisher of THE COLORADO KID and pretty tight with Mr. King is actually writing at least one if not more of the episodes this season. He was the publisher of Hard Case Crime that THE COLORADO KID was published under and is an author in his own right."  (Obviously whoever transcribed the audio didn't understand the word "Ardai" and transcribed it as "Cartwright"; Charles Ardai is clearly the person they're talking about, since he's the editor of Hard Case Crime and the publisher of THE COLORADO KID.) 

 But this will all be moot in, what, 10 days?  At that point anyone will be able to verify the information simply by watching the show and reading the credits on the screen.