What if you woke up one morning and found you'd acquired another self - a double who was almost you and yet not you at all? What if that double shared many of your preoccupations but, in a twisted, upside-down way, furthered the very causes you'd devoted your life to fighting against? Combining comic memoir with chilling reportage, Doppelganger is a revelatory treatment of the way many of us think and feel now - and an intellectual adventure story for our times. Naomi Klein's reckoning with her famous double, and with what doppelgangers have to tell us about our world.