Monsters can be found lurking behind any innocent smile and on any street corner in America. Never-before-seen-video footage stares straight into the eyes of these killers who hide in plain sight. Anyone can be a monster.

The series unravels the mysteries behind the planet’s most unprecedented and shocking natural events.

Footage of real-life rescues captured by the rescuers themselves as they put their lives on the line saving others.

Computer animation, historical documents, archive film, and other media help recreate July 20 1944, the day Hitler's generals attempted to assassinate him.

Mindless prehistoric killers from the deep or slick sophisticated predators? Sharks are responsible for fewer than 10 deaths per year, so why are we so terrified of them? This programme celebrates the extraordinary array of senses and skills that have evolved over 400 million years, allowing the shark to roam not just across the tropics, but as far as the upper reaches of the Amazon and under the arctic ice! Through 8 sharks, filmed as far apart as Hawaii, Australia, South Africa and Greenland, we will change your perceptions for ever!