This fascinating programme investigates compelling new leads into the profound scientific conundrum that surrounds earthquakes. The PBS cameras follow geologists as they investigate how these disasters are created and whether they can be predicted. In 2010 several epic earthquakes delivered one of the worst annual death tolls ever recorded. The deadliest strike in Haiti killed more than 200 000 people and reduced homes hospitals schools and the presidential palace to rubble. In exclusive coverage a camera crew follows a team of U.S. geologists as they enter Haiti in the immediate aftermath of the tragedy. The team hunts for crucial evidence that will help them determine exactly what happened deep underground and what the risks are of a new killer quake. Barely a month after the Haiti quake Chile was struck by a quake 100 times more powerful unleashing a tsunami that put the entire Pacific coast on high alert. In a coastal town devastated by the rushing wave follow a team of geologists as they battle aftershocks to measure the displacement caused by the earthquake. Could their work and the work of geologists at earthquake hot spots around the U.S. one day lead to a breakthrough in predicting quakes before they happen?