Andrew Stevens

An LAPD detective and his rookie partner are on the trail of a psychopathic young man who is murdering young women.

Canada 1931: The unsociable trapper Johnson lives for himself in the ice-cold mountains near the Yukon river. During a visit in the town he witnesses a dog-fight. He interrupts the game and buys one of the dogs - almost dead already - for $200 against the owner's will. When the owner Hasel complains to Mountie Sergeant Millen, he refuses to take action. But then the loathing breeder and his friends accuse Johnson of murder. So Millen, although sympathetic, has to try to take him under arrest - but Johnson defends his freedom in every way possible.

The depletion of the earth's ozone layer causes animals above the altitude of 5000 feet to run amok, which is very unfortunate for a group of hikers who get dropped off up there by helicopter just before the quarantine is announced.