Wolf Lake premiered on CBS on September 19, 2001. There are strange happenings in the small Pacific Northwest town of Wolf Lake, where the most prominent residents are "shape-shifters" who can transform themselves into wolves. As a struggle for power is brewing among the "shape-shifter" population to become the Alpha (leader) wolf, local Sherrif Matthew Donner and Seattle cop John Kanin attempt to get to the bottom of the mysterious goings-on. Sherman Blackstone is the keeper of all the town's secrets and he alone knows the ancient lore of Wolf Lake. Beginnig with the 6th episode the series moved to UPN.