Black holes are the most enigmatic, mysterious, and exotic objects in the universe. They're also the most powerful, with gravity so strong it can actually capture light. And they're the most destructive, swallowing dust, gas, planets, even giant stars. But now, astrophysicists are realizing that black holes are essential to understanding how our universe unfolded - maybe to explaining our very existence. In this 2-hour special, astrophysicist and novelist Janna Levin takes viewers on a journey to the frontiers of black hole science.