The unrelenting focus on Naomi and her doomed relationship with her estranged son and his father spoiled this season for me. All other characters and plotlines faded into the peripheral background as we were constantly confronted with Naomi's emotional turmoil - which personally began to bore me rigid.
And the last four episodes could have been easily been condensed into one in order to propel the plot forward. Instead we were just treading water.
Such an anti-climax and disappointment overall - even if the final episode whetted our appetite for what is to come in Season 6.