My wife and I find the show very enjoyable. However, it is important to know that, even at the time that the first episode was scheduled on ABC for August 2, it was already determined that the final five episodes of the first thirteen filmed would not be presented, at least not this year. (They simply didn't fit into the available time slots.)
Now, since then, the show did premiere on ABC, and has done very very poorly, despite very good promotion. People simply aren't watching the show. So maybe we'll see the final five episodes, maybe not; if not, we'll possibly be able to catch them on the DVD. A second season, though, is pretty unlikely. The show did poorly even in its country of origin (It's a Canadian show) , and was even moved out of a plum Sunday night time slot to the wasteland of Saturday night, there, as a result of how poorly it did there. So if their US partner (ABC) pulls out of a second season, there likely wouldn't be enough support to do a second season.