The disaster of Air France Flight 447 and the crash of NASA's Skylab in 1979 are catastrophes of aviation with a mysterious legacy; experts investigate these historic tragedies to determine what caused these monumental failures of flight.

When London's Grenfell Tower catches fire, its hundreds of residents must escape a deadly inferno; expert engineers investigate and reveal how the building's engineering caused the disaster to tragically escalate.

The nuclear meltdown of Three Mile Island in Pennsylvania (1979) and the deadly hydroelectric turbine tragedy at the Sayano-Shushenskaya Dam in Russia (2009) were power plant disasters of an unprecedented scale; experts examine the aftermath of these fatal catastrophes and explore their lasting consequences.

Expert scientists reveal how flawed operational procedures escalated a Japanese tragedy and one of the most catastrophic nuclear disasters in history.

The 2010 earthquake in Haiti was one of the world's most deadly natural disasters that left much of the island nation in ruins; experts investigate and reveal how a lack of construction safety measures resulted in such catastrophic destruction.