Season one was absolutely gripping providing a captivating storyline and complexity of characters. Season Two got off to a great start, however I can imagine it was the moment a giant octopus possesses the main character using her as a medium, is probably when lots of viewers were lost. Likely because such a creature was so removed from reality. Each episode thereafter proved more confusing including the last, leaving more questions than answers.
Overall, worth a watch but don't expect too much at the end.