I'd heard some good things about this show and managed to stumble across the re-runs of the first season on syfy, and i am so glad I did!! There is definitely an X-Files type element to the show, but it really is in a league of its own.
The main character, Audrey, is an FBI agent (if you don't like the average cop/crime show don't let this put you off) who travels to Haven following a convict, but whilst she is there it becomes apparent that there is a whole lot more to Haven than meets the eye. The show is a refreshing change from the norm as most of the episodes keep you guessing right to the end, and the season finale has got to be one of the best I have seen in a long time.
I would say, if you're not sure just give it a go, you've got nothing to lose and everything to gain! So glad that they are at last releasing this on region 2.