Based on actual events from Hurricane Katrina. When the floodwaters rose, power failed, and heat soared, exhausted caregivers at a New Orleans hospital were forced to make profound, heart-wrenching decisions.

Today New York is America's greatest city. But 30 years ago this summer, they couldn't even keep the lights on. A blackout plunged seven million people into darkness. Then the nightmare began. Anarchy exploded on the streets: thousands of shops were looted, whole neighbourhoods were burned, it seemed the civilisation of the city had come to an end.