In the winter of 2008-09, a new wolf family from the Pipestone Valley suddenly appeared in the Bow Valley of Banff National Park. Within a year, these new wolves had eliminated the Bow Valley wolves and established a dominance that would last for five years. As the climactic chapter in a twenty-year observational study of wolves in Banff National Park, respected wolf behaviour expert Günther Bloch and wildlife photographer John E. Marriott followed the Pipestones through the trials and tribulations of raising their family in one of the world's most heavily visited national parks.