There are so many cool ways that the idea of dealing with "past lives" can be used to create interesting story lines. In this series, the primary focus was on dealing with crime related issues. That's fine - crimes are an area ripe with mystery.
However, whenever I watched it, I got the feeling that I kind of know what the overall story would be, how it would proceed and how it would end. ... And honestly, sometimes it was a bit of a struggle to watch.
I think part of the problem is the writing - it really needed more imaginative story lines and more realistic characters. The former is a tough one to solve - they probably needed to bring in new writers. As far as the characters, they really needed to be overhauled. Kate McGinn (the lead) was really not believable -- she smiled too much at the wrong times and came off as not fully committed. As for the people she approached - they were not really believable either. They didn't seem to bat an eye when she told them that their problems may be related to a "past life" issue. On a series like "Medium", people often slammed the door on the lead character when she told them that she had a psychic dream about them - that's more believable.
Given that the series has been canceled (even before all the episodes have had a chance to run), it won't have a chance to recover from its problems. The idea was good though - it just needed to be conceived and executed better. Hopefully it will be reborn into and better life down the road.