Overview: Three horrifying accidents capture the world's attention, and in order to solve these deadly mysteries, hero investigators are pushed to the limit to uncover the hidden clues. A commercial jet plunges into the Florida Everglades and investigators face one of the most hazardous scenes imaginable. When a Boeing 777 crash lands at Heathrow Airport, investigators can't find anything wrong with the aircraft. And, a devastating crash shatters a Scottish village becoming the largest crime scene in the world.