Episode 9

Frank Sutter continues his interrogation of Huseklepp, convinced that he was responsible for his son's involvement in Stoddart's death. Meanwhile, Rattrey and Yelburton receive a note from Stoddard, to be delivered in the event of his death. It asks them to perform a brain analysis on a polar bear who was found to have mauled and eaten another adult male. Toxins in the bear's brain trigger Rattrey to perform the same analysis on Shirley Allerdyce, to determine if her body carried the same toxins. When the test results come back positive, Rattrey realises an environmental factor has played a part in both murders. Morton continues to probe into the circumstances surrounding Pettigrew's death. When he finds a series of photographs in Henry Tyson's dark room depicting the scene, he realises that Sheriff Andersen's version of events doesn't tally up.