We routinely talk about healthy food and clean water, but how often do we spare a thought for what enters our lungs? The World Health Organization calls air pollution the silent killer. Air pollution is proven to shorten our lifetimes and it hits the vulnerable - children, the sick and the elderly - hardest of all.
Prince William, Sir David Attenborough and astronaut Naoko Yamazaki hear the personal stories of people who are directly affected by air pollution and show us incredible solutions.

Seafood is a substantial part of the daily diet of over three billion people and oceans absorbs almost a third of all the greenhouse gases we emits. Buy the ocean it is not what it once was. Scenes of extraordinary ocean abundance now only exist in far-off places or in tales from the past. We urgently need to mend our relationship with our oceans and allow them to thrive once again.
Prince William, David Attenborough and Shakira find out about inspiring people and projects across the world that can help us stop damaging the oceans and enable their revival.

In the second episode, Will Smith descends 3,300 feet to the bottom of the ocean in a deep-water submersible, where even fewer people have gone than outer space. Along the way down, Will and explorer Diva Amon investigate how colour is used in the natural world and the role of bioluminescence. In the oceans, nearly 80 percent of animals use bioluminescence in some way, possibly the most common form of communication on the planet.

Mid-1942, as Hitler’s forces are pushing into southern Russia to take the oilfields, he spies a city prized by his enemy Stalin – Stalingrad. If Hitler can capture this city, he can expand his empire all the way to the Urals. But what Hitler hasn’t counted on is the enormous resilience of the Soviet people; men and women willing to defend their Motherland at all costs.
What ensues at Stalingrad is one of the bloodiest battles in the history of warfare, with an estimated 2 million total casualties, and an event that turns the tide for the Germans.

Jean Hargadon Wehner discusses how she came to remember years later the sexual abuse she suffered at Archbishop Keough High School. She also talks about what happened when she reported the abuse to Church officials and how she realized she was connected to the death of Sister Cathy Cesnik.
As the can of worms is opened on the hidden world in the high school and the people begin to talk about what happened behind closed doors. With the Jean’s accusations, Abbie Schaub, Gemma Hoskins, and Tom Nugent learn about a story of a graveyard and a source nicknamed 'Deep Throat' who could hold the key.

Lil Hughes Knipp recalls meeting Father Maskell near his end... and knowing that he would never be charged. The search for Brother Bob and a potential killer begins, and the revelation of a potential suspect named Edgar Davidson comes forward with an interesting story.
With more people coming forward, more suspects appear including a man named Billy Schmidt who lived in Cathy’s apartment. A contact from one of Cathy’s sisters could give new insight on the case.