In the third episode of the series, the intricate social dynamics of the Ngogo chimpanzee community come to a head. Decades of growth and dominance have made this the largest known chimp group, but internal rivalries lead to a significant schism, with a faction of males breaking away to form their own group, the Westerners. Once comrades, these chimps now face each other as deadly enemies. The tension escalates with the mysterious death of Pork Pie, leaving the central chimps in a state of heightened alert and mourning, while leadership struggles and territorial disputes intensify within both factions.
As the Westerners grow bolder, driven by the likes of Richmond and the ambitious Rollins, they encroach further into central territory, setting the stage for an inevitable clash. Amidst the power plays, we witness the personal struggles of individuals like Jackson, the embattled alpha, and Bartoli, who must protect her son Herzog from the looming threat.
This episode masterfully captures the raw emotion and brutal reality of chimpanzee warfare, leaving viewers on edge as alliances are tested and the fight for dominance reaches a fever pitch.

The filmmakers challenge former Indonesian death-squad leaders to reenact their mass-killings in whichever cinematic genres they wish, including classic Hollywood crime scenarios and lavish musical numbers. Anwar Congo and his friends have been dancing their way through musical numbers, twisting arms in film noir gangster scenes, and galloping across prairies as yodeling cowboys. Their foray into filmmaking is being celebrated in the media and debated on television, even though Anwar Congo and his friends are mass murderers.
Medan, Indonesia. When the government of Indonesia was overthrown by the military in 1965, Anwar and his friends were promoted from small-time gangsters who sold movie theatre tickets on the black market to death squad leaders. They helped the army kill more than one million alleged communists, ethnic Chinese, and intellectuals in less than a year. As the executioner for the most notorious death squad in his city, Anwar himself killed hundreds of people with his own hands.
The Act of Killing is about killers who have won, and the sort of society they have built. Unlike ageing Nazis or Rwandan génocidaires, Anwar and his friends have not been forced by history to admit they participated in crimes against humanity. Instead, they have written their own triumphant history, becoming role models for millions of young paramilitaries. The Act of Killing is a journey into the memories and imaginations of the perpetrators, offering insight into the minds of mass killers. And The Act of Killing is a nightmarish vision of a frighteningly banal culture of impunity in which killers can joke about crimes against humanity on television chat shows, and celebrate moral disaster with the ease and grace of a soft shoe dance number.

The rainforest is home to more species of plants and animals than any other habitat on the planet. But for humans, life there is not as easy as it looks. Life in the trees requires great skill, ingenuity and sheer bravery. The Matis of Brazil carve 4-metre-long blow-pipes to hunt monkeys - in near total silence. Deep in the Congo forests, Tete defies death by scaling a giant tree using nothing more than a liana vine, and he must then negotiate an angry swarm of bees - all to collect honey for his family. Three children from Venezuela's Piaroa tribe venture deep into the jungle to hunt tarantulas - to toast for lunch! In West Papua the Korowai tribe show-off their engineering skills by building a high-rise home 35 metres up in the tree tops. Most memorable of all, in Brazil we join a unique monitoring flight in search an un-contacted tribe...