We know who, we know how, but why? This show takes a different angle at approaching a "whodunnit" story and makes it a "whydidtheydoit". It's just a really well written and acted show, well worth a watch.
Jessica Biel did an a great job with this role. I was drawn in by the great writing and acting. This looks like it may be an stand alone series, hope they do another with a different story.