Ultimately it's the story that appears to be letting this down slightly as everything else works well. Our main antagonist Mick Taylor is barely seen in this episode yet each time the writers manage to come up with some side characters who also seem as nutty as a fruitcake. Sullivan is a key issue in this for me, as every time he manages to catch up with Eve he somehow incompetently lets her slip his grasp far to easily for a police detective.
Four episodes in I like the atmospheric tone especially with regards to score and cinematography, dually noted the distortion when Eve is bitten by the snake indicating she has blurred vision. I find the subplot to this particular episode just to be a filler and a little pointless with regards to moving the story forward. There seems to be a running theme here with characters delving into episodes without clear direction and abruptly coming to a halt as quickly as they entered.
This show mainly consists of characters on the run or in search of Mick Taylor, except Mick is slowly becoming less involved in my opinion which is a real shame as he makes Wolf Creek what it is in the first place.