Katy is finally laid to rest, and all of Knocknaree have come out for the funeral. The public and media pressure to find Katy's killer is intense, and Superintendent O'Kelly is concerned that all lines of inquiry have led to naught. Rob, however, is increasingly certain that his memories are leading him to the truth. As the partners dig into the past and pursue leads in the present, we learn about the dark ancient history of the woods, that Knocknaree means ‘hill of the king' and if the archaeologists can't finish their work, the truth about the place will be lost forever. As one lead goes nowhere but another starts to look promising, Cassie gets a call from Sam about another dead body.