On an August day in 2005, each and every person on Helios 522 lost consciousness. Inside the cockpit, both pilots were slumped over in their seats, unresponsive. Without any manual input to guide the aircraft, the Boeing 737 flew itself for over an hour. But two hours after takeoff, everyone on board died in a fiery crash. What happened here? Why didn't the pilots take control of the plane? And how did everyone lose consciousness? Tune into this week's episode as Caroline and Trevor discuss one of history's most haunting aviation disasters.