Polish mountaineer Voytek Kurtyka may have one of the most impressive résumés of all time - featuring his alpine-style first ascent of the West Face of Gasherbrum IV above all - but his reclusive character meant that we have read and heard little from the man himself over the years. When approached by acclaimed Canadian author Bernadette McDonald to write his Boardman Tasker-shortlisted biography, Art of Freedom, Voytek faced an identity crisis: to dress himself up as a beacon of virtue, or to strip himself down to the essential - warts and all - with a little inspiration from Game of Thrones to sew some blood, sex and tears into his story...