Mayhem in Minneapolis

Season 4, Episode 1 TV-PG CC HD CC SD

A deadly design flaw results in a horrifying rush hour bridge collapse that tragically leaves 13 dead in Minneapolis; using the latest science, experts investigate to reveal what went so catastrophically wrong on one of Minnesota's busiest crossings.

Sinkhole at the Museum

Season 4, Episode 2 TV-PG CC HD CC SD

A massive sinkhole swallows millions of dollars of legendary automobiles at the National Corvette Museum in Kentucky; expert geologists investigate and reveal how an enormous cave system could remain undetected and poised for catastrophic destruction.

Train of Terror

Season 4, Episode 3 TV-PG CC HD CC SD

A devastating rail disaster outside a small North Dakota town results in cargo erupting in massive explosions; experts use the latest science to investigate and uncover an engineering flaw poised for catastrophic failure.

Episode 4

Season 4, Episode 4 TV-PG CC HD CC SD

Calamity Comes to Canada

Season 4, Episode 5 TV-PG CC HD CC SD

Tragedy strikes a bustling Canadian shopping mall when a parking garage suddenly collapses resulting in a fatal disaster; expert engineers use the latest tech to investigate and uncover a deadly design flaw that could have been prevented.

Nightmare in New Orleans

Season 4, Episode 6 TV-PG CC HD CC SD

Construction turns catastrophic in New Orleans when the side of a hotel complex collapses on a busy street below; expert engineers investigate to uncover the reason behind this sudden and fatal disaster.

Oklahoma Freeway Free-fall

Season 4, Episode 7 TV-PG CC HD CC SD

A deadly tragedy on a major freeway in Oklahoma sends one of the state's busiest bridges collapsing into the Arkansas river below; expert engineers investigate how a tugboat striking a reinforced concrete pier could cause such a catastrophic disaster.

Kansas City Skywalk Disaster

Season 4, Episode 8 TV-PG CC HD CC SD

When an indoor hotel walkway collapses in Kansas City, Missouri, it becomes the most deadly engineering disaster in US history; experts investigate and uncover evidence of a catastrophic design change in the support system construction.

Suez Canal Catastrophe

Season 4, Episode 9 TV-PG CC HD CC SD

A shipping catastrophe occurs when a massive container vessel runs aground and completely blocks one of the most vital trade routes on the planet; experts investigate and uncover critical wind conditions and potential navigational errors.

Pittsburgh Landslide

Season 4, Episode 10 TV-PG CC HD CC SD

A vital hillside highway in Pennsylvania is destroyed in just minutes after a catastrophic landslide rocks a community; using the latest science, engineers investigate and uncover undetected geological issues with an increased and unstable traffic load.