An empty canoe washes up on the shore of the Nahanni River -- has the river claimed four more lives? When his teenage daughter goes missing on a summer wilderness canoe trip to the Nahanni River, Inspector Michael Green is forced into unfamiliar territory. Unable to mobilize the local RCMP, he enlists the help of his long-time friend, Staff Sergeant Brian Sullivan, to accompany him to the Northwest Territories to look for themselves. Green is terrified...