Beginnings and endings. A fractured archive ; A new world, a new art form ; A family divided / Photography's complex history -- The emergence of Vivian Maier. Young photographer / final days ; New York street photographer / Viral Vivian -- The reinvention of Vivian Maier. Mysterious nanny photographer ; High art / Downward spiral -- The aftermath. The missing picture: Vivian's Maier's last thirty years ; Those who did not know her ; Who owns Vivian Maier's photography? -- Epilogue