Watch Who Are the DeBolts? And Where Did They Get Nineteen Kids?

A diver visits the same octopus every day for a year in a South African kelp forest.

Two South Africans hunt for Rodriguez, a Detroit singer they think is dead.

Alex Honnold climbs El Capitan without a rope; you know he lives and it is still unbearable.

A cyclist tries doping and stumbles into the Russian state programme; his source flees to LA.

Philippe Petit walks a wire between the Twin Towers in 1974, told as a heist.

Robert McNamara's eleven lessons on Vietnam and Cuba; Errol Morris's Interrotron interview.

Eight hours on Simpson, race and Los Angeles; the documentary that won an Oscar as a film.

Amy Winehouse in home videos and voicemails; Asif Kapadia's archive method again.