S1, E2: Days after the slaughter of Dian Fossey's favourite gorilla, Digit, Sir David Attenborough arrives to find her coughing blood but insisting on taking him to film the gorillas in what becomes one of TV's most famous sequences.

S1, E2: Days after the slaughter of Dian Fossey's favourite gorilla, Digit, Sir David Attenborough arrives to find her coughing blood but insisting on taking him to film the gorillas in what becomes one of TV's most famous sequences.